1 314.88 1 1958 2 315.62 2 1958 3 316.33 3 1958 4 317.59 4 1958 5 317.93 5 1958 6 317.71 6 1958 7 315.92 7 1958 8 315.15 8 1958 9 314.02 9 1958 10 312.83 10 1958 11 313.64 11 1958 12 314.71 12 1958 13 315.62 1 1959 14 316.59 2 1959 15 316.94 3 1959 16 317.77 4 1959 17 318.29 5 1959 18 318.24 6 1959 19 316.67 7 1959 20 314.96 8 1959 21 314.12 9 1959 22 313.58 10 1959 23 315.14 11 1959 24 315.77 12 1959 25 316.62 1 1960 26 317.16 2 1960 27 317.90 3 1960 28 319.21 4 1960 29 320.02 5 1960 30 319.74 6 1960 31 318.15 7 1960 32 316.00 8 1960 33 314.23 9 1960 34 314.07 10 1960 35 315.04 11 1960 36 316.19 12 1960 37 316.97 1 1961 38 317.74 2 1961 39 318.63 3 1961 40 319.43 4 1961 41 320.47 5 1961 42 319.71 6 1961 43 318.78 7 1961 44 316.84 8 1961 45 315.16 9 1961 46 315.56 10 1961 47 316.14 11 1961 48 317.13 12 1961 49 318.06 1 1962 50 318.59 2 1962 51 319.74 3 1962 52 320.63 4 1962 53 321.21 5 1962 54 320.83 6 1962 55 319.55 7 1962 56 317.75 8 1962 57 316.27 9 1962 58 315.62 10 1962 59 316.84 11 1962 60 317.70 12 1962 61 318.80 1 1963 62 319.08 2 1963 63 320.15 3 1963 64 321.49 4 1963 65 322.25 5 1963 66 321.50 6 1963 67 319.67 7 1963 68 317.61 8 1963 69 316.25 9 1963 70 316.17 10 1963 71 317.01 11 1963 72 318.36 12 1963 73 319.37 1 1964 74 319.93 2 1964 75 320.40 3 1964 76 321.65 4 1964 77 322.26 5 1964 78 322.19 6 1964 79 320.49 7 1964 80 318.48 8 1964 81 317.13 9 1964 82 317.02 10 1964 83 317.84 11 1964 84 318.78 12 1964 85 319.55 1 1965 86 320.65 2 1965 87 321.15 3 1965 88 322.31 4 1965 89 322.35 5 1965 90 322.19 6 1965 91 321.53 7 1965 92 319.13 8 1965 93 317.99 9 1965 94 317.70 10 1965 95 319.15 11 1965 96 319.27 12 1965 97 320.22 1 1966 98 321.23 2 1966 99 322.13 3 1966 100 323.30 4 1966 101 323.57 5 1966 102 323.29 6 1966 103 322.36 7 1966 104 319.71 8 1966 105 317.89 9 1966 106 317.54 10 1966 107 319.36 11 1966 108 320.51 12 1966 109 321.80 1 1967 110 322.03 2 1967 111 322.50 3 1967 112 324.00 4 1967 113 324.46 5 1967 114 323.46 6 1967 115 322.19 7 1967 116 320.57 8 1967 117 318.91 9 1967 118 318.81 10 1967 119 320.24 11 1967 120 321.59 12 1967 121 322.15 1 1968 122 322.73 2 1968 123 323.50 3 1968 124 324.52 4 1968 125 325.11 5 1968 126 325.06 6 1968 127 323.62 7 1968 128 321.55 8 1968 129 319.89 9 1968 130 319.80 10 1968 131 320.73 11 1968 132 322.25 12 1968 133 323.73 1 1969 134 324.53 2 1969 135 325.62 3 1969 136 326.58 4 1969 137 327.24 5 1969 138 326.53 6 1969 139 325.63 7 1969 140 323.28 8 1969 141 322.21 9 1969 142 321.67 10 1969 143 322.61 11 1969 144 324.07 12 1969 145 324.91 1 1970 146 325.81 2 1970 147 326.85 3 1970 148 328.07 4 1970 149 327.97 5 1970 150 327.77 6 1970 151 326.44 7 1970 152 324.92 8 1970 153 323.49 9 1970 154 323.50 10 1970 155 324.34 11 1970 156 325.39 12 1970 157 326.46 1 1971 158 326.93 2 1971 159 327.56 3 1971 160 328.23 4 1971 161 329.51 5 1971 162 329.04 6 1971 163 327.87 7 1971 164 326.00 8 1971 165 324.06 9 1971 166 324.20 10 1971 167 325.48 11 1971 168 326.62 12 1971 169 327.30 1 1972 170 328.20 2 1972 171 328.50 3 1972 172 330.22 4 1972 173 330.58 5 1972 174 329.48 6 1972 175 328.56 7 1972 176 326.77 8 1972 177 325.39 9 1972 178 325.72 10 1972 179 326.97 11 1972 180 328.09 12 1972 181 329.16 1 1973 182 330.02 2 1973 183 330.95 3 1973 184 331.95 4 1973 185 332.85 5 1973 186 332.58 6 1973 187 331.30 7 1973 188 329.64 8 1973 189 328.12 9 1973 190 327.67 10 1973 191 328.69 11 1973 192 329.07 12 1973 193 329.84 1 1974 194 331.17 2 1974 195 331.94 3 1974 196 333.20 4 1974 197 333.55 5 1974 198 332.76 6 1974 199 331.79 7 1974 200 329.61 8 1974 201 327.88 9 1974 202 327.85 10 1974 203 328.79 11 1974 204 330.13 12 1974 205 330.64 1 1975 206 331.21 2 1975 207 331.88 3 1975 208 333.13 4 1975 209 333.76 5 1975 210 333.74 6 1975 211 332.05 7 1975 212 330.40 8 1975 213 328.89 9 1975 214 328.55 10 1975 215 329.57 11 1975 216 330.83 12 1975