1957 06 29.59  23.75  26.67 
1957 07 28.22  23.76  25.99 
1957 08 28.26  24.12  26.19 
1957 09 28.60  23.94  26.27 
1957 10 28.68  24.27  26.47 
1957 11 29.28  24.50  26.89 
1957 12 29.26  25.10  27.18 
1958 01 30.87  25.03  27.95 
1958 02 30.77  24.49  27.63 
1958 03 30.91  24.56  27.73 
1958 04 31.12  24.78  27.95 
1959 09 28.45  22.15  25.30 
1959 10 29.18  22.73  25.95 
1959 11 30.02  21.30  25.66 
1959 12 30.17  22.46  26.31 
1960 01 30.31  23.84  27.07 
1960 02 30.12  23.01  26.56 
1960 03 30.64  22.92  26.78 
1960 04 31.06  23.63  27.34 
1960 05 29.70  24.00  26.85 
1960 06 29.25  23.98  26.61 
1960 07 28.22  22.57  25.39 
1960 08 28.33  22.79  25.56 
1960 09 29.28  23.06  26.17 
1960 10 28.83  23.44  26.13 
1960 11 30.54  24.22  27.38 
1960 12 30.90  23.64  27.27 
1961 01 31.19  24.69  27.94 
1961 02 30.96  23.87  27.41 
1961 03 29.23  23.46  26.34 
1961 04 30.35  24.79  27.57 
1961 05 29.64  24.20  26.92 
1961 06 28.58  23.81  26.19 
1961 07 28.62  23.14  25.88 
1961 08 28.92  23.18  26.05 
1961 09 29.32  24.00  26.66 
1961 10 28.85  22.92  25.88 
1961 11 29.76  23.48  26.62 
1961 12 30.58  23.41  26.99 
1962 01 30.99  22.63  26.81 
1962 02 30.42  23.59  27.00 
1962 03 31.09  23.08  27.08 
1962 04 30.93  22.72  26.82 
1962 05 30.08  22.58  26.33 
1962 06 29.53  22.57  26.05 
1962 07 29.05  23.47  26.25 
1962 08 28.41  22.75  25.58 
1962 09 30.09  23.46  26.77 
1962 10 29.48  23.83  26.65 
1962 11 29.91  23.76  26.83 
1962 12 30.03  23.48  26.75 
1963 01 31.06  23.50  27.28 
1963 02 31.26  23.59  27.42 
1963 03 30.88  23.37  27.12 
1963 04 31.13  24.21  27.66 
1963 05 30.49  23.69  27.09 
1963 06 29.67  23.85  26.76 
1963 07 29.81  23.84  26.82 
1963 08 29.39  23.61  26.50 
1963 09 29.46  22.90  26.18 
1963 10 29.51  23.77  26.64 
1963 11 30.56  24.08  27.32 
1963 12 30.57  24.64  27.60 
1964 01 30.91  24.52  27.71 
1964 02 31.09  24.45  27.77 
1964 03 31.47  24.55  28.00 
1964 04 31.01  24.08  27.54 
1964 05 29.79  22.68  26.23 
1964 06 29.24  21.58  25.41 
1964 07 28.83  21.47  25.15 
1964 08 29.20  21.63  25.41 
1964 09 29.42  21.04  25.23 
1964 10 30.50  21.58  26.04 
1964 11 30.08  21.71  25.89 
1964 12 29.79  21.46  25.62 
1965 01 30.90  21.70  26.30 
1965 02 30.31  21.79  26.05 
1965 03 31.12  21.65  26.38 
1965 04 30.21  21.86  26.03 
1965 05 30.33  22.47  26.40 
1965 06 29.27  21.54  25.40 
1965 07 28.97  22.21  25.59 
1965 08 28.49  22.02  25.25 
1965 09 29.06  22.77  25.91 
1965 10 29.66  22.90  26.28 
1965 11 30.38  23.25  26.81 
1965 12 30.17  23.79  26.98 
1966 01 31.15  23.54  27.34 
1966 02 31.61  23.90  27.75 
1966 03 31.94  23.99  27.96 
1966 04 99.99 -99.99  27.60 
1966 05 99.99 -99.99  26.70 
1966 06 99.99 -99.99  26.60 
1966 07 99.99 -99.99  26.40 
1966 08 99.99 -99.99  25.80 
1966 09 99.99 -99.99  26.40 
1966 10 99.99 -99.99  26.70 
1966 11 99.99 -99.99  27.30 
1966 12 99.99 -99.99  26.90 
1967 01 99.99 -99.99  26.90 
1967 02 99.99 -99.99  26.70 
1967 03 99.99 -99.99  27.60 
1967 04 99.99 -99.99  26.70 
1967 05 99.99 -99.99  26.20 
1967 06 99.99 -99.99  25.50 
1967 07 99.99 -99.99  25.20 
1967 08 99.99 -99.99  25.40 
1967 09 99.99 -99.99  26.40 
1967 10 99.99 -99.99  26.00 
1967 11 99.99 -99.99  26.10 
1967 12 99.99 -99.99  26.70 
1968 01 99.99 -99.99  27.20 
1968 02 99.99 -99.99  26.70 
1968 03 99.99 -99.99  26.60 
1968 04 99.99 -99.99  25.80 
1968 05 99.99 -99.99  26.40 
1968 06 99.99 -99.99  27.40 
1968 07 99.99 -99.99  25.90 
1968 08 99.99 -99.99  25.20 
1968 09 99.99 -99.99  26.30 
1968 10 99.99 -99.99  26.50 
1968 11 99.99 -99.99  28.20 
1968 12 99.99 -99.99  27.60 
1969 01 99.99 -99.99  27.60 
1969 02 99.99 -99.99  27.30 
1969 03 99.99 -99.99  27.30 
1969 04 99.99 -99.99  27.00 
1969 05 99.99 -99.99  26.60 
1969 06 99.99 -99.99  26.90 
1969 07 99.99 -99.99  25.80 
1969 08 99.99 -99.99  25.70 
1969 09 99.99 -99.99  25.90 
1969 10 99.99 -99.99  26.90 
1969 11 99.99 -99.99  26.70 
1969 12 99.99 -99.99  26.90 
1970 01 99.99 -99.99  27.20 
1970 02 99.99 -99.99  27.70 
1970 03 99.99 -99.99  26.70 
1970 04 99.99 -99.99  27.20 
1970 05 99.99 -99.99  27.30 
1970 06 99.99 -99.99  26.70 
1970 07 99.99 -99.99  26.40 
1970 08 99.99 -99.99  25.70 
1970 09 99.99 -99.99  25.80 
1970 10 99.99 -99.99  26.60 
1970 11 99.99 -99.99  26.40 
1970 12 99.99 -99.99  25.90 
1971 01 99.99 -99.99  26.70 
1971 02 99.99 -99.99  26.30 
1971 03 99.99 -99.99  26.40 
1971 04 99.99 -99.99  26.30 
1971 05 99.99 -99.99  26.20 
1971 06 99.99 -99.99  25.80 
1971 07 99.99 -99.99  25.60 
1971 08 99.99 -99.99  25.90 
1971 09 99.99 -99.99  25.80 
1971 10 99.99 -99.99  26.30 
1971 11 99.99 -99.99  26.70 
1971 12 99.99 -99.99  26.70 
1972 01 99.99 -99.99  26.20 
1972 02 99.99 -99.99  26.50 
1972 03 99.99 -99.99  27.20 
1972 04 99.99 -99.99  27.30 
1972 05 99.99 -99.99  26.60 
1972 06 99.99 -99.99  26.70 
1972 07 99.99 -99.99  25.80 
1972 08 99.99 -99.99  26.40 
1972 09 99.99 -99.99  26.30 
1972 10 99.99 -99.99  26.80 
1972 11 99.99 -99.99  27.10 
1972 12 99.99 -99.99  28.10 
1973 01 99.99 -99.99  27.60 
1973 02 99.99 -99.99  28.10 
1973 03 99.99 -99.99  28.30 
1973 04 99.99 -99.99  27.90 
1973 05 99.99 -99.99  27.40 
1973 06 99.99 -99.99  26.90 
1973 07 99.99 -99.99  26.60 
1973 08 99.99 -99.99  26.30 
1973 09 99.99 -99.99  26.80 
1973 10 99.99 -99.99  26.00 
1973 11 99.99 -99.99  26.40 
1973 12 99.99 -99.99  26.70 
1974 01 99.99 -99.99  27.00 
1974 02 99.99 -99.99  26.10 
1974 03 99.99 -99.99  26.60 
1974 04 99.99 -99.99  26.40 
1974 05 99.99 -99.99  25.80 
1974 06 99.99 -99.99  26.20 
1974 07 99.99 -99.99  26.20 
1974 08 99.99 -99.99  25.60 
1974 09 99.99 -99.99  26.90 
1974 10 99.99 -99.99  27.10 
1974 11 99.99 -99.99  26.80 
1974 12 99.99 -99.99  26.70 
1975 01 99.99 -99.99  26.90 
1975 02 99.99 -99.99  27.00 
1975 03 99.99 -99.99  27.30 
1975 04 99.99 -99.99  26.60 
1975 05 99.99 -99.99  26.70 
1975 06 99.99 -99.99  26.20 
1975 07 99.99 -99.99  26.30 
1975 08 99.99 -99.99  26.30 
1975 09 99.99 -99.99  26.40 
1975 10 99.99 -99.99  27.30 
1975 11 99.99 -99.99  26.80 
1975 12 99.99 -99.99  26.30 
1976 01 99.99 -99.99  26.40 
1976 02 99.99 -99.99  26.60 
1976 03 99.99 -99.99  27.00 
1976 04 99.99 -99.99  26.90 
1976 05 99.99 -99.99  26.20 
1976 06 99.99 -99.99  26.00 
1976 07 99.99 -99.99  25.80 
1976 08 99.99 -99.99  26.00 
1976 09 99.99 -99.99  26.10 
1976 10 99.99 -99.99  27.10 
1976 11 99.99 -99.99  27.20 
1976 12 99.99 -99.99  26.70 
1977 01 99.99 -99.99  27.70 
1977 02 99.99 -99.99  27.90 
1977 03 99.99 -99.99  27.40 
1977 04 99.99 -99.99  27.20 
1977 05 99.99 -99.99  26.30 
1977 06 99.99 -99.99  26.90 
1977 07 99.99 -99.99  26.20 
1977 08 99.99 -99.99  26.20 
1977 09 99.99 -99.99  25.80 
1977 10 99.99 -99.99  26.70 
1977 11 99.99 -99.99  27.10 
1977 12 99.99 -99.99  27.80 
1978 01 99.99 -99.99  27.20 
1978 02 99.99 -99.99  27.60 
1978 03 99.99 -99.99  26.80 
1978 04 99.99 -99.99  26.80 
1978 05 99.99 -99.99  26.90 
1978 06 99.99 -99.99  26.60 
1978 07 99.99 -99.99  26.10 
1978 08 99.99 -99.99  26.40 
1978 09 99.99 -99.99  26.40 
1978 10 99.99 -99.99  26.70 
1978 11 99.99 -99.99  26.30 
1978 12 99.99 -99.99  27.20 
1979 02 99.99 -99.99  27.40 
1979 03 99.99 -99.99  27.90 
1979 04 99.99 -99.99  26.70 
1979 05 99.99 -99.99  27.30 
1979 06 99.99 -99.99  27.30 
1979 07 99.99 -99.99  25.80 
1979 08 99.99 -99.99  26.00 
1979 09 99.99 -99.99  26.90 
1979 10 99.99 -99.99  27.20 
1979 11 99.99 -99.99  26.90 
1979 12 99.99 -99.99  26.90 
1980 01 99.99 -99.99  27.30 
1980 02 99.99 -99.99  27.70 
1980 03 99.99 -99.99  27.90 
1980 04 99.99 -99.99  28.00 
1980 05 99.99 -99.99  26.40 
1980 06 99.99 -99.99  27.00 
1980 07 99.99 -99.99  26.20 
1980 08 99.99 -99.99  26.30 
1980 09 99.99 -99.99  26.80 
1980 10 99.99 -99.99  26.50 
1980 11 99.99 -99.99  27.70 
1980 12 99.99 -99.99  27.60 
1981 01 99.99 -99.99  27.60 
1981 02 99.99 -99.99  27.10 
1981 03 99.99 -99.99  27.00 
1981 04 99.99 -99.99  26.80 
1981 05 99.99 -99.99  27.00 
1981 07 99.99 -99.99  26.10 
1981 08 99.99 -99.99  26.20 
1981 09 99.99 -99.99  27.00 
1981 10 99.99 -99.99  26.60 
1981 11 99.99 -99.99  27.10 
1981 12 99.99 -99.99  27.20 
1982 01 99.99 -99.99  27.80 
1982 02 99.99 -99.99  26.90 
1982 03 99.99 -99.99  27.90 
1982 04 99.99 -99.99  27.70 
1982 05 99.99 -99.99  27.10 
1982 06 99.99 -99.99  26.90 
1982 07 99.99 -99.99  25.90 
1982 08 99.99 -99.99  26.10 
1982 09 99.99 -99.99  26.20 
1982 10 99.99 -99.99  27.10 
1982 11 99.99 -99.99  26.80 
1982 12 99.99 -99.99  27.30 
1983 01 99.99 -99.99  27.80 
1983 02 99.99 -99.99  28.60 
1983 03 99.99 -99.99  27.70 
1983 04 99.99 -99.99  27.30 
1983 05 99.99 -99.99  27.30 
1983 06 99.99 -99.99  26.50 
1983 07 99.99 -99.99  25.90 
1983 08 99.99 -99.99  25.70 
1983 09 99.99 -99.99  26.80 
1983 10 99.99 -99.99  26.40 
1983 11 99.99 -99.99  26.90 
1983 12 99.99 -99.99  27.40 
1984 01 99.99 -99.99  27.10 
1984 02 99.99 -99.99  27.50 
1984 03 99.99 -99.99  27.40 
1984 04 99.99 -99.99  27.50 
1984 05 99.99 -99.99  27.70 
1984 06 99.99 -99.99  27.00 
1984 07 99.99 -99.99  26.10 
1984 08 99.99 -99.99  26.60 
1984 09 99.99 -99.99  26.40 
1984 10 99.99 -99.99  26.40 
1984 11 99.99 -99.99  27.20 
1984 12 99.99 -99.99  26.80 
1985 01 99.99 -99.99  26.80 
1985 02 99.99 -99.99  27.60 
1985 03 99.99 -99.99  27.90 
1985 04 99.99 -99.99  27.10 
1985 05 99.99 -99.99  26.90 
1985 06 99.99 -99.99  26.70 
1985 07 99.99 -99.99  26.40 
1985 08 99.99 -99.99  26.60 
1985 09 99.99 -99.99  26.50 
1985 10 99.99 -99.99  27.20 
1985 11 99.99 -99.99  26.90 
1985 12 99.99 -99.99  27.60 
1986 01 99.99 -99.99  27.30 
1986 02 99.99 -99.99  27.60 
1986 03 99.99 -99.99  27.80 
1986 04 99.99 -99.99  27.30 
1986 05 99.99 -99.99  27.00 
1986 06 99.99 -99.99  27.00 
1986 07 99.99 -99.99  26.30 
1986 08 99.99 -99.99  25.70 
1986 09 99.99 -99.99  26.60 
1986 10 99.99 -99.99  27.30 
1986 11 99.99 -99.99  27.70 
1986 12 99.99 -99.99  27.60 
1987 01 99.99 -99.99  27.60 
1987 02 99.99 -99.99  28.10 
1987 03 99.99 -99.99  27.90 
1987 04 99.99 -99.99  27.80 
1987 05 99.99 -99.99  26.90 
1987 07 99.99 -99.99  25.70 
1987 08 99.99 -99.99  25.70 
1988 06 99.99 -99.99  27.40 
1988 08 99.99 -99.99  26.90 
1988 11 99.99 -99.99  26.50 
1989 03 99.99 -99.99  27.40 
1989 04 99.99 -99.99  27.10 
1989 05 99.99 -99.99  27.00 
1989 06 99.99 -99.99  27.00 
1989 07 99.99 -99.99  25.90 
1989 08 99.99 -99.99  26.70 
1989 09 99.99 -99.99  27.70 
1989 10 99.99 -99.99  27.40 
1989 11 99.99 -99.99  27.10 
1990 01 99.99 -99.99  27.70 
1990 02 99.99 -99.99  27.40 
1990 03 99.99 -99.99  27.60 
1990 04 99.99 -99.99  27.00 
1990 05 99.99 -99.99  27.70 
1990 06 99.99 -99.99  26.90 
1990 07 99.99 -99.99  26.80 
1990 08 99.99 -99.99  26.70 
1990 09 99.99 -99.99  27.00 
1990 10 99.99 -99.99  27.70 
1990 11 99.99 -99.99  27.70 
1990 12 99.99 -99.99  27.50 
1991 01 99.99 -99.99  27.60 
1991 02 99.99 -99.99  27.80 
1991 03 99.99 -99.99  28.20 
1991 04 99.99 -99.99  28.20 
1992 04 99.99 -99.99  27.60 
1994 06 99.99 -99.99  27.10 
1994 11 99.99 -99.99  11.40 
1994 12 99.99 -99.99  28.30 
1995 01 99.99 -99.99  28.30 
1995 02 99.99 -99.99  28.40 
1995 03 99.99 -99.99  28.80 
1995 04 99.99 -99.99  28.20 
1995 05 99.99 -99.99  28.30 
1995 06 99.99 -99.99  28.80 
1995 07 99.99 -99.99  28.10 
1995 08 99.99 -99.99  27.60 
1995 09 99.99 -99.99  27.70 
1995 10 99.99 -99.99  27.80 
1995 11 99.99 -99.99  28.30 
1995 12 99.99 -99.99  28.50 
1996 01 99.99 -99.99  28.40 
1996 02 99.99 -99.99  28.40 
1996 03 99.99 -99.99  28.50 
1996 04 99.99 -99.99  28.50 
1996 05 99.99 -99.99  27.70 
1996 06 99.99 -99.99  28.10 
1996 07 99.99 -99.99  27.50 
1996 08 99.99 -99.99  27.60 
1996 09 99.99 -99.99  28.20 
1996 10 99.99 -99.99  27.80 
1996 11 99.99 -99.99  28.60 
1996 12 99.99 -99.99  28.70 
1997 01 99.99 -99.99  27.90 
1997 02 99.99 -99.99  28.70 
1997 03 99.99 -99.99  28.00 
1997 04 99.99 -99.99  29.00 
1997 05 99.99 -99.99  27.40 
1997 06 99.99 -99.99  27.00 
1997 07 99.99 -99.99  27.70 
1997 08 99.99 -99.99  27.00 
1997 09 99.99 -99.99  26.90 
1997 10 99.99 -99.99  28.40 
1997 11 99.99 -99.99  28.70 
1997 12 99.99 -99.99  29.00 
1998 01 99.99 -99.99  29.50 
1998 02 99.99 -99.99  30.20 
1998 03 99.99 -99.99  29.70 
1998 04 99.99 -99.99  29.50 
1998 05 99.99 -99.99  29.20 
1998 06 99.99 -99.99  28.70 
1998 07 99.99 -99.99  27.60 
1998 08 99.99 -99.99  27.50 
1998 09 99.99 -99.99  29.10 
1998 10 99.99 -99.99  29.60 
1998 11 99.99 -99.99  30.10 
1998 12 99.99 -99.99  28.50 
1999 01 99.99 -99.99  27.70 
1999 02 99.99 -99.99  27.70 
1999 03 99.99 -99.99  28.00 
1999 04 99.99 -99.99  28.30 
1999 05 99.99 -99.99  26.70 
1999 06 99.99 -99.99  27.10 
1999 07 99.99 -99.99  27.40 
1999 08 99.99 -99.99  27.00 
1999 09 99.99 -99.99  27.50 
1999 10 99.99 -99.99  27.50 
1999 11 99.99 -99.99  28.10 
1999 12 99.99 -99.99  28.70 
2000 01 99.99 -99.99  28.90 
2000 02 99.99 -99.99  28.70 
2000 03 99.99 -99.99  28.30 
2000 04 99.99 -99.99  28.60 
2000 05 99.99 -99.99  27.80 
2000 06 99.99 -99.99  27.40 
2000 07 99.99 -99.99  26.70 
2000 08 99.99 -99.99  27.50 
2000 09 99.99 -99.99  28.10 
2000 10 99.99 -99.99  27.80 
2000 11 99.99 -99.99  28.30 
2000 12 99.99 -99.99  28.80 
2001 01 99.99 -99.99  29.10 
2001 02 99.99 -99.99  28.60 
2001 03 99.99 -99.99  28.60 
2001 04 99.99 -99.99  28.50 
2001 05 99.99 -99.99  28.60 
2001 06 99.99 -99.99  28.20 
2001 07 99.99 -99.99  27.50 
2001 08 99.99 -99.99  27.90 
2001 09 99.99 -99.99  27.80 
2001 10 99.99 -99.99  28.00 
2001 11 99.99 -99.99  28.60 
2001 12 99.99 -99.99  28.40 
2002 01 99.99 -99.99  29.10 
2002 02 99.99 -99.99  29.70 
2002 03 99.99 -99.99  29.10 
2002 04 99.99 -99.99  28.90 
2002 05 99.99 -99.99  29.00 
2002 06 99.99 -99.99  28.20 
2002 07 99.99 -99.99  28.20 
2002 08 99.99 -99.99  27.30 
2002 09 99.99 -99.99  28.20 
2002 10 99.99 -99.99  27.90 
2002 11 99.99 -99.99  29.10 
2002 12 99.99 -99.99  29.20 
2003 01 99.99 -99.99  29.70 
2003 02 99.99 -99.99  28.80 
2003 03 99.99 -99.99  29.30 
2003 04 99.99 -99.99  28.30 
2003 05 99.99 -99.99  28.20 
2003 06 99.99 -99.99  27.10 
2003 07 99.99 -99.99  27.00 
2003 08 99.99 -99.99  26.30 
2003 09 99.99 -99.99  27.60 
2003 10 99.99 -99.99  28.00 
2003 11 99.99 -99.99  27.70 
2003 12 99.99 -99.99  28.10 
2004 01 99.99 -99.99  27.80 
2004 02 99.99 -99.99  27.40 
2004 03 99.99 -99.99  27.50 
2004 04 99.99 -99.99  27.40 
2004 05 99.99 -99.99  27.10 
2004 06 99.99 -99.99  27.10 
2004 07 99.99 -99.99  26.90 
2004 08 99.99 -99.99  27.60 
2004 09 99.99 -99.99  27.90 
2004 10 99.99 -99.99  28.10 
2004 11 99.99 -99.99  28.50 
2004 12 99.99 -99.99  29.30 
2005 01 99.99 -99.99  28.90 
2005 02 99.99 -99.99  29.20 
2005 03 99.99 -99.99  29.30 
2005 04 99.99 -99.99  28.70 
2005 05 99.99 -99.99  27.80 
2005 06 99.99 -99.99  27.10 
2005 07 99.99 -99.99  26.80 
2005 08 99.99 -99.99  27.20 
2005 09 99.99 -99.99  27.80 
2005 10 99.99 -99.99  28.00 
2005 11 99.99 -99.99  28.70 
2005 12 99.99 -99.99  28.10 
2006 01 99.99 -99.99  27.90 
2006 02 99.99 -99.99  27.90 
2006 03 99.99 -99.99  28.70 
2006 04 99.99 -99.99  28.80 
2006 05 99.99 -99.99  28.90 
2006 06 99.99 -99.99  27.80 
2006 07 99.99 -99.99  26.80 
2006 08 99.99 -99.99  27.30 
2006 09 99.99 -99.99  27.20 
2006 10 99.99 -99.99  27.30 
2006 11 99.99 -99.99  27.50 
2006 12 99.99 -99.99  27.90 
2007 01 99.99 -99.99  28.50 
2007 02 99.99 -99.99  28.70 
2007 03 99.99 -99.99  28.70 
2007 04 99.99 -99.99  28.90 
2007 05 99.99 -99.99  28.20 
2007 07 99.99 -99.99  28.30 
2007 08 99.99 -99.99  28.40 
2007 09 99.99 -99.99  28.30 
2007 10 99.99 -99.99  28.50 
2007 11 99.99 -99.99  28.70 
2007 12 99.99 -99.99  28.60 
2008 01 99.99 -99.99  28.60 
2008 02 99.99 -99.99  29.00 
2008 03 99.99 -99.99  28.60 
2008 06 99.99 -99.99  27.30 
2008 09 99.99 -99.99  27.40 
2008 10 99.99 -99.99  28.20 
2008 11 99.99 -99.99  28.50 
2008 12 99.99 -99.99  29.20 
2009 01 99.99 -99.99  29.50 
2009 02 99.99 -99.99  29.70 
2009 03 99.99 -99.99  29.60 
2009 05 99.99 -99.99  27.70 
2009 06 99.99 -99.99  27.30 
2009 07 99.99 -99.99  27.00 
2009 11 99.99 -99.99  27.40 
2009 12 99.99 -99.99  27.40 
2010 01 99.99 -99.99  29.40 
2010 04 99.99 -99.99  28.30 
2010 05 99.99 -99.99  28.20 
2010 11 99.99 -99.99  27.20 
2011 02 99.99 -99.99  26.80 
2011 03 99.99 -99.99  27.70 
2011 04 99.99 -99.99  28.00 
2011 05 99.99 -99.99  27.40 
2011 06 99.99 -99.99  27.30 
2011 08 99.99 -99.99  26.80 
2011 09 99.99 -99.99  27.20 
2011 10 99.99 -99.99  27.50 
2011 11 99.99 -99.99  27.10 
2011 12 99.99 -99.99  27.60 
2012 02 99.99 -99.99  27.60 
2012 03 99.99 -99.99  27.40 
2012 04 99.99 -99.99  27.30 
2012 05 99.99 -99.99  27.10 
2012 06 99.99 -99.99  27.10 
2012 07 99.99 -99.99  26.60 
2012 08 99.99 -99.99  27.00 
2012 09 99.99 -99.99  27.50 
2012 10 99.99 -99.99  28.00 
2012 11 99.99 -99.99  28.40 
2012 12 99.99 -99.99  27.80 
2013 01 99.99 -99.99  27.60 
2013 02 99.99 -99.99  28.20 
2013 03 99.99 -99.99  28.10 
2013 04 99.99 -99.99  28.40 
2013 05 99.99 -99.99  28.30 
2013 06 99.99 -99.99  27.70 
2013 07 99.99 -99.99  27.00 
2013 08 99.99 -99.99  27.00 
2013 09 99.99 -99.99  27.50 
2013 10 99.99 -99.99  27.70 
