1949 04 37.00  20.80  28.90 
1949 05 37.80  21.80  29.80 
1949 06 34.70  20.60  27.65 
1949 07 35.20  20.40  27.80 
1949 08 35.90  20.40  28.15 
1949 09 35.80  20.00  27.90 
1949 10 34.09  20.50  27.30 
1949 11 28.90  15.70  22.30 
1949 12 31.90  14.20  23.05 
1950 01 33.09  16.50  24.80 
1950 02 32.59  16.20  24.40 
1950 03 36.70  18.90  27.80 
1950 04 36.90  19.00  27.95 
1950 05 38.00  20.00  29.00 
1950 06 35.70 -99.99 -99.99 
1950 07 35.90 -99.99 -99.99 
1950 08 35.30  19.10  27.20 
1950 09 32.59  20.40  26.50 
1950 10 30.00  19.10  24.55 
1950 11 30.20  15.30  22.75 
1950 12 29.90  10.90  20.40 
1951 01 31.60  13.30  22.45 
1951 02 31.10  13.60  22.35 
1951 03 35.09  16.40  25.75 
1951 04 37.50  18.20  27.85 
1951 05 37.20  20.70  28.95 
1951 06 35.80  19.90  27.84 
1951 07 33.50  18.70  26.10 
1951 08 37.09  21.20  29.15 
1951 09 33.30  21.50  27.40 
1951 10 31.70  19.10  25.40 
1951 11 31.30  17.10  24.20 
1951 12 33.20  14.40  23.80 
1952 01 34.09  14.40  24.25 
1952 02 33.20  14.90  24.05 
1952 03 38.50  15.80  27.15 
1952 04 37.59  19.70  28.65 
1952 05 37.30  19.70  28.50 
1952 06 30.60  20.00  25.30 
1952 07 32.80  21.70  27.25 
1952 08 32.50  19.60  26.05 
1952 09 31.90  21.00  26.45 
1952 10 30.20  21.20  25.70 
1952 11 32.70  17.40  25.05 
1952 12 31.90  15.10  23.50 
1953 01 33.30  14.60  23.95 
1953 02 34.70  12.90  23.80 
1953 03 37.50  17.29  27.40 
1953 04 39.30  16.90  28.09 
1953 05 38.50  20.10  29.30 
1953 06 35.80  17.90  26.84 
1953 07 33.20  18.79  26.00 
1953 08 34.00  20.50  27.25 
1953 09 32.50  20.00  26.25 
1953 10 32.40  19.50  25.95 
1953 11 33.09  16.79  24.95 
1953 12 34.40  18.10  26.25 
1954 01 34.40  14.90  24.65 
1954 02 33.09  16.10  24.59 
1954 03 36.00  15.80  25.90 
1954 04 37.80  20.10  28.95 
1954 05 36.80  20.20  28.50 
1954 06 35.20  20.40  27.80 
1954 07 33.09  19.90  26.50 
1954 08 33.50  20.29  26.90 
1954 09 31.60  19.90  25.75 
1954 10 30.70  18.79  24.75 
1954 11 30.30  15.40  22.84 
1954 12 30.70  14.10  22.40 
1955 01 32.09  15.20  23.65 
1955 02 33.30  14.00  23.65 
1955 03 37.20  16.60  26.90 
1955 04 38.70  19.10  28.90 
1955 05 39.40  19.29  29.35 
1955 06 37.80  20.10  28.95 
1955 07 31.90  19.90  25.90 
1955 08 33.00  19.79  26.40 
1955 09 30.30  19.60  24.95 
1955 10 29.50  18.50  24.00 
1955 11 31.50  18.60  25.05 
1955 12 29.90  16.20  23.05 
1956 01 30.20  13.10  21.65 
1956 02 34.50  16.10  25.30 
1956 03 34.59  15.60  25.09 
1956 04 36.80  17.70  27.25 
1956 05 33.90  18.20  26.05 
1956 06 31.00  17.90  24.45 
1956 07 32.09  18.00  25.05 
1956 08 33.50  18.10  25.80 
1956 09 30.20  18.00  24.10 
1956 10 29.90  17.20  23.55 
1956 11 30.00  15.10  22.55 
1956 12 30.20  14.50  22.35 
1957 01 30.90  13.40  22.15 
1957 02 33.80  15.10  24.45 
1957 03 35.59  13.80  24.70 
1957 04 36.70  17.79  27.25 
1957 05 38.30  18.20  28.25 
1957 06 33.70  18.40  26.05 
1957 07 32.00  18.40  25.20 
1957 08 32.90  18.20  25.55 
1957 09 30.90  18.40  24.65 
1957 10 31.40  17.40  24.40 
1957 11 31.30  16.00  23.65 
1957 12 29.10  12.50  20.80 
1958 01 28.20  12.90  20.55 
1958 02 32.90  13.10  23.00 
1958 03 36.70  16.29  26.50 
1958 04 36.50  17.90  27.20 
1958 05 36.09  19.29  27.70 
1958 06 32.90  19.29  26.10 
1958 07 30.90  18.40  24.65 
1958 08 31.80  18.20  25.00 
1958 09 30.40  18.40  24.40 
1958 10 29.90  18.50  24.20 
1958 11 30.70  16.79  23.75 
1958 12 28.30  14.10  21.20 
1959 01 28.70  13.90  21.30 
1959 02 33.50  14.60  24.05 
1959 03 32.70  15.20  23.95 
1959 04 33.20  17.20  25.20 
1959 05 34.50  19.79  27.15 
1959 06 31.50  18.79  25.15 
1959 07 30.80  18.00  24.40 
1959 08 30.50  18.40  24.45 
1959 09 29.30  18.40  23.84 
1959 10 28.90  18.00  23.45 
1959 11 26.60  14.40  20.50 
1959 12 27.20  13.40  20.29 
1960 01 28.90  13.60  21.25 
1960 02 30.40  11.00  20.70 
1960 03 31.50  15.40  23.45 
1960 04 34.00  17.40  25.70 
1960 05 34.59  19.29  26.95 
1960 06 31.60  18.90  25.25 
1960 07 30.20  18.40  24.30 
1960 08 29.50  18.40  23.95 
1960 09 28.30  18.20  23.25 
1960 10 28.80  18.60  23.70 
1960 11 28.00  16.10  22.05 
1960 12 27.10  13.40  20.25 
1961 01 26.70  14.20  20.45 
1961 02 30.20  14.60  22.40 
1961 03 33.30  15.90  24.59 
1961 04 34.20  18.79  26.50 
1961 05 34.59  19.40  27.00 
1961 06 31.40  18.79  25.09 
1961 07 30.00  18.29  24.15 
1961 08 30.20  18.29  24.25 
1961 09 29.30  17.90  23.59 
1961 10 28.00  17.70  22.85 
1961 11 27.30  15.50  21.40 
1961 12 29.40  13.50  21.45 
1962 01 27.50  12.50  20.00 
1962 02 32.90  14.50  23.70 
1962 03 33.09  15.90  24.50 
1962 04 32.40  18.29  25.35 
1962 05 33.80  19.40  26.59 
1962 06 31.10  18.70  24.90 
1962 07 31.40  18.20  24.80 
1962 08 31.10  18.29  24.70 
1962 09 29.10  18.29  23.70 
1962 10 28.50  18.29  23.40 
1962 11 27.80  13.60  20.70 
1962 12 27.90  13.90  20.90 
1963 01 28.60  12.90  20.75 
1963 02 28.90  12.40  20.65 
1963 03 32.09  16.79  24.45 
1963 04 34.20  19.29  26.75 
1963 05 33.30  20.10  26.70 
1963 06 32.40  19.40  25.90 
1963 07 30.30  18.40  24.34 
1963 08 30.20  19.00  24.60 
1963 09 28.20  18.70  23.45 
1963 10 28.10  17.79  22.95 
1963 11 27.50  16.20  21.85 
1963 12 25.80  12.50  19.15 
1964 01 27.20  12.90  20.04 
1964 02 31.10  13.60  22.35 
1964 03 34.20  17.79  26.00 
1964 04 35.20  19.10  27.15 
1964 05 34.20  19.90  27.05 
1964 06 30.20  18.50  24.35 
1964 07 29.70  18.60  24.15 
1964 08 30.80  18.20  24.50 
1964 09 29.40  18.40  23.90 
1964 10 26.80  15.90  21.34 
1964 11 29.00  15.90  22.45 
1964 12 28.00  14.40  21.20 
1965 01 28.80  13.00  20.90 
1965 02 30.30  13.80  22.05 
1965 03 32.00  15.40  23.70 
1965 04 34.00  18.70  26.35 
1965 05 34.09  19.90  27.00 
1965 06 30.20  18.70  24.45 
1965 07 30.20  18.20  24.20 
1965 08 30.10  18.00  24.05 
1965 09 30.50  18.60  24.55 
1965 10 27.00  17.10  22.05 
1965 11 28.70  16.00  22.35 
1965 12 28.20  14.30  21.25 
1966 01 26.90  12.80  19.85 
1966 02 29.40  14.10  21.75 
1966 03 30.50  15.80  23.15 
1966 04 33.70  18.79  26.25 
1966 05 33.50  20.00  26.75 
1966 06 32.00  19.29  25.65 
1966 07 30.60  19.00  24.80 
1966 08 30.00  18.70  24.35 
1966 09 29.10  18.50  23.80 
1966 10 27.90  17.90  22.90 
1966 11 26.90  14.00  20.45 
1966 12 26.90  12.10  19.50 
1967 01 27.50  12.60  20.04 
1967 02 28.80  13.30  21.05 
1967 03 31.80  15.90  23.84 
1967 04 33.59  18.00  25.80 
1967 05 34.30  20.20  27.25 
1967 06 30.60  19.00  24.80 
1967 07 31.90  18.50  25.20 
1967 08 31.80  18.29  25.05 
1967 09 29.00  17.90  23.45 
1967 10 27.00  17.29  22.15 
1967 11 27.40  14.80  21.10 
1967 12 28.50  14.10  21.30 
1968 01 27.70  13.90  20.80 
1968 02 26.90  12.70  19.79 
1968 03 29.20  14.70  21.95 
1968 04 33.30  19.00  26.15 
1968 05 32.80  19.79  26.30 
1968 06 30.30  19.20  24.75 
1968 07 30.20  18.50  24.35 
1968 08 31.00  18.79  24.90 
1968 09 30.20  18.70  24.45 
1968 10 28.60  17.79  23.20 
1968 11 28.70  14.50  21.60 
1968 12 27.70  14.00  20.85 
1969 01 28.40  13.80  21.10 
1969 02 30.80  15.60  23.20 
1969 03 29.50  16.90  23.20 
1969 04 33.59  19.50  26.55 
1969 05 33.30  20.40  26.84 
1969 06 33.30  20.50  26.90 
1969 07 30.50  19.20  24.85 
1969 08 28.90  19.00  23.95 
1969 09 28.30  18.90  23.59 
1969 10 28.30  18.00  23.15 
1969 11 26.70  16.29  21.50 
1969 12 27.00  13.90  20.45 
1970 01 27.30  14.00  20.65 
1970 02 26.50  13.50  20.00 
1970 03 32.09  15.50  23.80 
1970 04 34.59  19.50  27.05 
1970 05 32.59  19.00  25.80 
1970 06 30.80  19.60  25.20 
1970 07 29.50  18.79  24.15 
1970 08 30.00  18.50  24.25 
1970 09 28.30  18.20  23.25 
1970 10 27.90  18.00  22.95 
1970 11 25.90  13.50  19.70 
1970 12 27.60  13.60  20.60 
1971 01 28.40  13.40  20.90 
1971 02 29.80  12.90  21.34 
1971 03 28.50  15.90  22.20 
1971 04 30.20  15.90  23.05 
1971 05 31.80  20.20  26.00 
1971 06 29.40  18.40  23.90 
1971 07 28.60  18.10  23.35 
1971 08 29.00  18.00  23.50 
1971 09 28.80  18.20  23.50 
1971 10 28.30  17.60  22.95 
1971 11 27.30  15.70  21.50 
1971 12 27.60  15.30  21.45 
1972 01 28.60  14.80  21.70 
1972 02 27.90  13.30  20.60 
1972 03 31.40  14.60  23.00 
1972 04 34.30  18.79  26.55 
1972 05 33.90  20.29  27.10 
1972 06 29.90  19.29  24.59 
1972 07 30.70  18.40  24.55 
1972 08 29.70  18.00  23.85 
1972 09 31.20  18.50  24.85 
1972 10 31.20  18.70  24.95 
1972 11 30.50  18.00  24.25 
1972 12 28.10  14.60  21.35 
1973 01 27.40  13.50  20.45 
1973 02 27.90  14.10  21.00 
1973 03 34.70  17.00  25.85 
1973 04 34.30  17.90  26.09 
1973 05 35.59  21.70  28.65 
1973 06 32.80  21.10  26.95 
1973 07 32.30  20.20  26.25 
1973 08 30.00  20.29  25.15 
1973 09 30.70  20.29  25.50 
1973 10 29.50  20.20  24.85 
1973 11 30.00  18.10  24.05 
1973 12 28.70  12.80  20.75 
1974 01 31.30  16.60  23.95 
1974 02 29.60  15.20  22.40 
1974 03 34.50  18.90  26.70 
1974 04 35.40  19.50  27.45 
1974 05 35.80  20.40  28.09 
1974 06 31.60  19.70  25.65 
1974 07 32.50  19.29  25.90 
1974 08 33.30  20.00  26.65 
1974 09 29.50  19.79  24.65 
1974 10 27.80  18.60  23.20 
1974 11 30.00  17.70  23.85 
1974 12 30.60  16.29  23.45 
1975 01 29.80  16.20  23.00 
1975 02 32.50  16.60  24.55 
1975 03 35.20  19.10  27.15 
1975 04 36.90  21.00  28.95 
1975 05 35.70  21.90  28.80 
1975 06 32.30  21.20  26.75 
1975 07 32.09  20.10  26.09 
1975 08 32.40  20.00  26.20 
1975 09 29.80  19.60  24.70 
1975 10 29.50  19.20  24.35 
1975 11 29.30  17.40  23.34 
1975 12 29.20  15.60  22.40 
1976 01 27.20  14.50  20.85 
1976 02 28.90  15.40  22.15 
1976 03 35.50  18.79  27.15 
1976 04 35.40  20.90  28.15 
1976 05 35.70  21.90  28.80 
1976 06 30.90  21.50  26.20 
1976 07 32.00  20.60  26.30 
1976 08 31.30  20.50  25.90 
1976 09 31.40  20.50  25.95 
1976 10 30.10  19.79  24.95 
1976 11 27.70  17.60  22.65 
1976 12 27.10  16.29  21.70 
1977 01 29.30  15.90  22.59 
1977 02 30.30  16.79  23.55 
1977 03 34.30  18.20  26.25 
1977 04 32.59  19.70  26.15 
1977 05 35.40  21.40  28.40 
1977 06 32.50  21.20  26.85 
1977 07 32.70  20.90  26.80 
1977 08 32.40  20.50  26.45 
1977 09 32.09  21.00  26.55 
1977 10 31.20  20.50  25.85 
1977 11 31.20  17.50  24.35 
1977 12 32.50  17.29  24.90 
1978 01 30.40  15.30  22.85 
1978 02 31.40  16.20  23.80 
1978 03 33.59  18.10  25.84 
1978 04 36.20  20.40  28.30 
1978 05 36.70  21.80  29.25 
1978 06 32.40  21.40  26.90 
1978 07 31.90  20.60  26.25 
1978 08 32.09  20.50  26.30 
1978 09 30.90  20.60  25.75 
1978 10 30.30  19.20  24.75 
1978 11 31.90  18.60  25.25 
1978 12 31.20  17.60  24.40 
1979 01 29.40  15.30  22.35 
1979 02 30.30  17.60  23.95 
1979 03 34.70  18.40  26.55 
1979 05 35.00  20.90  27.95 
1979 06 32.20  21.40  26.80 
1979 07 33.30  21.80  27.55 
1979 08 32.09  21.10  26.59 
1979 09 29.00  20.60  24.80 
1979 10 29.20  20.29  24.75 
1979 11 28.50  17.50  23.00 
1979 12 29.00  16.40  22.70 
1980 01 31.60  15.30  23.45 
1980 02 32.20  16.10  24.15 
1980 03 35.59  18.50  27.05 
1980 04 32.90  20.20  26.55 
1980 05 36.30  21.10  28.70 
1980 06 33.50  20.90  27.20 
1980 07 32.59  20.60  26.59 
1980 08 31.90  20.20  26.05 
1980 09 30.20  20.20  25.20 
1980 11 29.30  18.00  23.65 
1980 12 28.20  15.90  22.05 
1981 01 29.80  14.60  22.20 
1981 02 28.90  16.40  22.65 
1981 03 32.40  18.40  25.40 
1981 04 35.90  21.10  28.50 
1981 05 35.30  20.70  28.00 
1981 06 31.50  20.40  25.95 
1981 07 31.20  19.60  25.40 
1981 08 31.70  20.29  26.00 
1981 09 31.30  20.29  25.80 
1981 10 30.20  19.90  25.05 
1981 11 30.40  15.60  23.00 
1981 12 31.00  16.40  23.70 
1982 01 32.50  15.80  24.15 
1982 02 31.90  16.60  24.25 
1982 03 33.30  18.29  25.80 
1982 04 36.40  21.00  28.70 
1982 05 35.50  21.80  28.65 
1982 06 32.30  21.20  26.75 
1982 07 31.70  19.50  25.60 
1982 08 32.50  20.40  26.45 
1982 09 30.60  20.60  25.60 
1982 10 29.40  19.50  24.45 
1982 11 31.70  18.20  24.95 
1982 12 28.90  17.00  22.95 
1983 01 29.50  15.60  22.55 
1983 02 31.10  16.29  23.70 
1983 03 33.09  16.50  24.80 
1983 04 37.00  19.50  28.25 
1983 05 37.59  22.70  30.15 
1983 06 34.00  21.80  27.90 
1983 07 31.80  20.90  26.34 
1983 08 32.50  21.00  26.75 
1983 09 30.70  20.90  25.80 
1983 10 30.50  19.79  25.15 
1983 11 31.60  18.00  24.80 
1983 12 31.20  16.29  23.75 
1984 01 30.30  15.60  22.95 
1984 02 31.60  16.90  24.25 
1984 03 31.40  17.20  24.30 
1984 04 36.50  19.90  28.20 
1984 07 30.50  20.60  25.55 
1984 08 31.00  20.50  25.75 
1984 09 28.80  20.10  24.45 
1984 10 31.50  19.60  25.55 
1984 11 31.40  16.29  23.84 
1984 12 33.09  15.10  24.09 
1985 01 32.09  14.40  23.25 
1985 02 33.30  15.80  24.55 
1985 03 34.70  18.60  26.65 
1985 04 35.80  20.00  27.90 
1985 05 36.40  22.20  29.30 
1985 06 31.50  20.70  26.10 
1985 07 31.50  20.29  25.90 
1985 08 31.20  20.50  25.85 
1985 09 30.80  20.50  25.65 
1985 10 31.60  20.29  25.95 
1985 11 31.70  17.79  24.75 
1985 12 29.90  18.10  24.00 
1986 01 28.50  15.10  21.80 
1986 02 32.59  17.29  24.95 
1986 03 31.60  16.40  24.00 
1986 04 35.09  20.70  27.90 
1986 05 34.40  22.20  28.30 
1986 06 32.30  21.50  26.90 
1986 07 30.70  20.60  25.65 
1986 08 31.10  20.90  26.00 
1986 09 30.60  21.00  25.80 
1986 10 31.40  19.60  25.50 
1986 11 31.70  19.40  25.55 
1986 12 32.09  16.90  24.50 
1987 01 30.60  13.90  22.25 
1987 02 32.50  16.20  24.35 
1987 03 32.59  17.00  24.80 
1987 04 31.60  19.79  25.70 
1987 05 35.40  22.00  28.70 
1987 06 32.50  22.40  27.45 
1987 07 31.20  21.80  26.50 
1987 08 32.30  21.70  27.00 
1987 09 31.80  21.10  26.45 
1987 10 28.70  19.10  23.90 
1987 11 31.10  17.90  24.50 
1988 01 29.10  16.79  22.95 
1988 02 33.00  16.29  24.65 
1988 03 33.70  18.70  26.20 
1988 04 35.40  21.60  28.50 
1988 05 36.20  22.60  29.40 
1988 06 32.80  21.70  27.25 
1988 07 32.00  21.00  26.50 
1988 08 30.50  21.10  25.80 
1988 09 29.90  20.60  25.25 
1988 10 29.60  19.50  24.55 
1988 11 32.70  19.20  25.95 
1988 12 31.80  16.40  24.09 
1989 01 32.59  17.29  24.95 
1989 02 31.70  16.10  23.90 
1989 03 32.30  16.50  24.40 
1989 04 34.70  20.40  27.55 
1989 05 34.50  21.60  28.05 
1989 06 32.00  21.00  26.50 
1989 07 32.59  21.30  26.95 
1989 08 31.90  21.00  26.45 
1989 09 28.40  20.60  24.50 
1989 10 29.10  19.50  24.30 
1989 11 30.90  19.29  25.09 
1989 12 30.60  15.60  23.10 
1990 01 31.60  17.50  24.55 
1990 02 31.10  16.70  23.90 
1990 03 31.30  17.40  24.34 
1990 04 35.70  21.20  28.45 
1990 05 36.00  21.40  28.70 
1990 06 32.70  21.60  27.15 
1990 07 31.20  20.90  26.05 
1990 08 32.00  20.60  26.30 
1990 09 31.00  20.90  25.95 
1990 10 31.80  20.50  26.15 
1990 11 29.60  18.60  24.10 
1990 12 31.30  16.40  23.84 
1991 01 34.20  16.90  25.55 
1991 02 32.30  15.80  24.05 
1991 03 36.50  17.00  26.75 
1991 04 37.40  21.40  29.40 
1991 05 35.20  22.10  28.65 
1991 06 34.80  22.20  28.50 
1991 07 32.80  21.50  27.15 
1991 08 33.09  21.10  27.09 
1991 09 31.00  20.60  25.80 
1991 10 30.50  20.70  25.60 
1991 11 28.50  18.29  23.40 
1991 12 29.50  17.79  23.65 
1992 01 29.80  16.90  23.34 
1992 02 30.10  18.00  24.05 
1992 03 33.50  20.00  26.75 
1992 04 34.30  21.70  28.00 
1992 05 33.70  21.80  27.75 
1992 06 31.70  21.80  26.75 
1992 07 32.00  21.40  26.70 
1992 08 31.70  21.40  26.55 
1992 09 30.60  21.30  25.95 
1992 10 30.30  20.50  25.40 
1992 11 31.20  19.50  25.35 
1992 12 32.20  17.00  24.60 
1993 01 31.30  17.20  24.25 
1993 02 32.90  17.60  25.25 
1993 03 32.70  18.29  25.50 
1993 04 35.20  21.50  28.35 
1993 05 35.90  22.50  29.20 
1993 06 33.40  22.10  27.75 
1993 07 31.70  21.30  26.50 
1993 08 31.20  21.10  26.15 
1993 09 29.90  20.80  25.34 
1993 10 30.20  20.60  25.40 
1993 11 31.50  18.50  25.00 
1993 12 30.90  17.60  24.25 
1994 01 30.90  16.20  23.55 
1994 02 31.80  17.60  24.70 
1994 03 33.30  18.50  25.90 
1994 04 35.90  21.50  28.70 
1994 05 35.30  23.20  29.25 
1994 06 33.30  20.80  27.05 
1994 07 32.90  20.20  26.55 
1994 08 31.60  20.29  25.95 
1994 09 31.50  20.40  25.95 
1994 10 33.00  20.40  26.70 
1994 11 33.80  18.90  26.34 
1994 12 32.30  17.90  25.09 
1995 01 31.30  16.70  24.00 
1995 02 32.59  17.10  24.84 
1995 03 33.80  19.00  26.40 
1995 04 34.80  22.20  28.50 
1995 05 35.90  21.80  28.85 
1995 06 33.00  21.50  27.25 
1995 07 32.09  20.80  26.45 
1995 08 30.80  21.40  26.09 
1995 09 30.30  21.20  25.75 
1995 10 29.10  19.29  24.20 
1995 11 32.00  18.50  25.25 
1995 12 30.30  17.29  23.80 
1996 01 29.20  14.10  21.65 
1996 02 32.50  15.60  24.05 
1996 03 32.80  16.50  24.65 
1996 04 34.20  19.79  27.00 
1996 05 35.00  21.10  28.05 
1996 06 31.70  20.80  26.25 
1996 07 31.40  20.40  25.90 
1996 08 30.70  20.29  25.50 
1996 09 31.80  20.80  26.30 
1996 10 31.30  19.60  25.45 
1996 11 29.70  18.00  23.85 
1996 12 31.30  17.00  24.15 
1997 01 31.60  16.60  24.10 
1997 02 31.60  17.00  24.30 
1997 03 34.59  19.90  27.25 
1997 04 33.50  20.50  27.00 
1997 05 34.00  20.80  27.40 
1997 06 32.50  20.70  26.60 
1997 07 32.09  20.60  26.34 
1997 08 33.30  20.60  26.95 
1997 09 31.50  20.40  25.95 
1997 10 29.60  19.40  24.50 
1997 11 31.10  19.50  25.30 
1997 12 29.30  15.70  22.50 
1998 01 31.60  16.90  24.25 
1998 02 33.80  15.60  24.70 
1998 03 34.00  17.79  25.90 
1998 04 35.90  20.10  28.00 
1998 05 37.59  21.40  29.50 
1998 06 36.50  22.90  29.70 
1998 07 32.00  21.20  26.60 
1998 08 31.90  20.90  26.40 
1998 09 29.70  20.60  25.15 
1998 10 29.50  20.80  25.15 
1998 11 30.30  19.60  24.95 
1998 12 29.80  16.10  22.95 
