1949 10 31.94  25.39  28.66 
1949 11 31.68  25.55  28.61 
1949 12 31.27  25.61  28.44 
1950 01 29.87  25.00  27.43 
1950 02 30.54  25.47  28.00 
1950 03 30.23  25.21  27.72 
1950 04 30.82  25.36  28.09 
1950 05 31.27  25.53  28.40 
1950 06 30.84  25.04  27.94 
1950 07 30.85  25.07  27.96 
1950 08 30.82  25.07  27.94 
1950 09 31.00  25.03  28.01 
1950 10 32.54  25.33  28.93 
1950 11 31.33  25.46  28.39 
1950 12 30.75  25.38  28.06 
1951 01 30.85  25.55  28.20 
1951 02 31.54  25.42  28.48 
1951 03 31.06  26.07  28.56 
1951 04 32.75  25.80  29.27 
1951 05 33.31  25.85  29.58 
1951 06 32.45  25.56  29.00 
1951 07 33.16  25.90  29.53 
1951 08 32.49  25.89  29.19 
1951 09 33.66  26.09  29.88 
1951 10 32.98  25.98  29.48 
1951 11 33.66  26.20  29.93 
1951 12 31.35  25.98  28.66 
1952 01 32.12  26.38  29.25 
1952 02 32.52  26.14  29.33 
1952 03 32.33  26.15  29.24 
1952 04 32.33  26.05  29.19 
1952 05 32.93  26.06  29.50 
1952 06 32.72  26.15  29.43 
1952 07 32.70  25.60  29.15 
1952 08 32.59  25.44  29.01 
1952 09 32.90  25.56  29.23 
1952 10 32.87  25.58  29.22 
1952 11 32.68  25.73  29.20 
1952 12 31.70  25.74  28.72 
1953 01 32.49  25.98  29.23 
1953 02 31.71  26.11  28.91 
1953 03 31.44  25.71  28.57 
1953 04 32.46  25.42  28.93 
1953 05 32.29  25.19  28.74 
1953 06 32.74  25.41  29.07 
1953 07 32.72  24.64  28.68 
1953 08 32.59  24.87  28.73 
1953 09 33.06  25.47  29.26 
1953 10 32.87  25.84  29.35 
1953 11 32.89  25.73  29.31 
1953 12 32.09  25.29  28.69 
1954 01 32.31  25.15  28.73 
1954 02 31.32  25.03  28.17 
1954 03 31.94  25.50  28.72 
1954 04 31.75  25.37  28.56 
1954 05 32.36  25.96  29.16 
1954 06 31.94  25.39  28.66 
1954 07 31.26  25.44  28.35 
1954 08 31.51  25.05  28.28 
1954 09 32.12  25.46  28.79 
1954 10 32.45  25.64  29.04 
1954 11 31.22  25.59  28.40 
1954 12 30.92  25.60  28.26 
1955 01 29.42  25.32  27.37 
1955 02 30.20  25.28  27.74 
1955 03 30.14  25.28  27.71 
1955 04 30.39  25.34  27.86 
1955 05 30.41  25.35  27.88 
1955 06 30.81  25.46  28.13 
1955 07 30.70  25.46  28.08 
1955 08 30.50  25.33  27.91 
1955 09 30.83  25.40  28.11 
1955 10 30.65  25.08  27.86 
1955 11 30.31  24.75  27.53 
1955 12 29.95  24.69  27.32 
1956 01 30.31  24.65  27.48 
1956 02 30.44  24.88  27.66 
1956 03 30.85  25.34  28.09 
1956 04 31.21  25.14  28.17 
1956 05 30.77  25.54  28.15 
1956 06 30.81  25.39  28.09 
1956 07 30.68  25.17  27.92 
1956 08 31.05  25.45  28.25 
1956 09 31.19  25.31  28.25 
1956 10 31.25  25.51  28.38 
1956 11 30.87  25.26  28.06 
1956 12 30.98  25.88  28.43 
1957 01 30.94  25.59  28.26 
1957 02 31.00  25.81  28.40 
1957 03 31.22  25.84  28.53 
1957 04 31.55  25.98  28.76 
1957 05 32.00  25.82  28.91 
1957 06 31.73  26.08  28.90 
1957 07 31.76  25.79  28.77 
1957 08 31.84  26.10  28.97 
1957 09 32.11  25.57  28.84 
1957 10 32.50  26.32  29.41 
1957 11 32.22  25.55  28.88 
1957 12 32.08  25.65  28.86 
1958 01 31.83  25.16  28.49 
1958 02 31.88  25.64  28.75 
1958 03 32.50  25.91  29.21 
1958 04 32.74  26.67  29.70 
1958 05 32.48  26.37  29.42 
1958 06 32.45  26.18  29.31 
1958 07 32.50  26.22  29.36 
1958 08 32.59  26.27  29.43 
1958 09 32.06  25.80  28.93 
1958 10 32.03  25.76  28.89 
1958 11 32.52  26.17  29.34 
1958 12 31.56  25.61  28.58 
1959 01 32.18  25.90  29.04 
1959 02 31.83  25.86  28.84 
1959 03 32.54  25.81  29.17 
1959 04 32.79  26.01  29.40 
1959 05 32.78  26.06  29.41 
1959 06 31.98  25.97  28.97 
1959 07 31.90  25.52  28.71 
1959 08 31.63  25.57  28.59 
1959 09 31.86  25.56  28.71 
1959 10 32.20  25.80  29.00 
1959 11 32.22  25.66  28.94 
1959 12 32.16  26.18  29.17 
1960 01 31.99  26.08  29.03 
1960 02 31.21  25.22  28.21 
1960 03 31.65  25.66  28.65 
1960 04 32.32  25.68  29.00 
1960 05 32.41  26.09  29.25 
1960 06 31.98  25.74  28.86 
1960 07 32.32  25.87  29.09 
1960 08 32.38  25.82  29.10 
1960 09 32.09  25.60  28.84 
1960 10 32.09  25.81  28.95 
1960 11 32.11  26.07  29.09 
1960 12 32.09  26.20  29.15 
1961 01 31.80  26.09  28.94 
1961 02 31.57  25.86  28.71 
1961 03 31.08  25.97  28.52 
1961 04 32.02  26.20  29.11 
1961 05 31.86  26.09  28.97 
1961 06 31.41  25.38  28.39 
1961 07 31.50  25.53  28.51 
1961 08 31.60  25.77  28.68 
1961 09 31.80  25.63  28.71 
1961 10 31.65  25.66  28.65 
1961 11 32.02  25.87  28.94 
1961 12 31.70  25.80  28.75 
1962 01 31.66  25.76  28.71 
1962 02 30.89  25.31  28.09 
1962 03 31.31  25.31  28.31 
1962 04 31.04  24.98  28.01 
1962 05 31.19  25.82  28.50 
1962 06 31.16  25.79  28.47 
1962 07 30.61  25.39  28.00 
1962 08 31.59  25.69  28.64 
1962 09 31.24  25.44  28.34 
1962 10 31.51  25.37  28.44 
1962 11 30.99  25.31  28.15 
1962 12 31.10  25.52  28.31 
1963 01 31.22  25.16  28.18 
1963 02 31.34  25.11  28.22 
1963 03 31.80  25.63  28.71 
1963 04 31.78  25.80  28.79 
1963 05 31.99  26.30  29.14 
1963 06 31.61  25.90  28.75 
1963 07 31.64  25.59  28.61 
1963 08 31.76  25.62  28.69 
1963 09 31.84  25.84  28.84 
1963 10 32.28  26.01  29.14 
1963 11 32.55  26.18  29.36 
1963 12 32.11  25.72  28.91 
1964 01 31.23  25.35  28.29 
1964 02 31.72  26.30  29.00 
1964 03 31.72  25.80  28.75 
1964 04 31.29  25.32  28.30 
1964 05 30.96  25.22  28.09 
1964 06 30.39  25.21  27.80 
1964 07 30.47  25.06  27.76 
1964 08 30.30  24.69  27.49 
1964 09 30.10  24.98  27.54 
1964 10 30.04  24.85  27.44 
1964 11 30.02  24.88  27.45 
1964 12 30.09  24.89  27.49 
1965 01 30.45  25.22  27.83 
1965 02 30.52  24.99  27.75 
1965 03 30.21  24.80  27.50 
1965 04 30.82  25.10  27.96 
1965 05 31.21  25.34  28.27 
1965 06 31.20  25.09  28.14 
1965 07 31.30  25.54  28.42 
1965 08 31.35  25.22  28.28 
1965 09 31.92  25.72  28.82 
1965 10 31.87  25.56  28.71 
1965 11 31.37  24.69  28.03 
1965 12 31.95  25.92  28.93 
1966 01 31.11  25.16  28.13 
1966 02 31.57  25.94  28.75 
1966 03 31.58  26.11  28.84 
1966 04 31.53  26.17  28.85 
1966 05 31.80  26.13  28.96 
1966 06 31.47  25.71  28.59 
1966 07 31.02  25.63  28.32 
1966 08 31.43  25.79  28.61 
1966 09 31.48  25.84  28.66 
1966 10 31.49  25.85  28.67 
1966 11 31.36  25.58  28.47 
1966 12 31.55  25.86  28.70 
1967 01 30.70  25.58  28.14 
1967 02 30.24  25.02  27.63 
1967 03 30.91  25.39  28.15 
1967 04 31.00  25.56  28.28 
1967 05 31.00  25.62  28.31 
1967 06 30.63  25.11  27.87 
1967 07 30.38  25.30  27.84 
1967 08 30.67  25.30  27.98 
