yr Base P y R 1959.00 40.548 20.680 2392.886 2.773 1959.25 40.725 20.711 2455.813 3.000 1959.50 40.974 20.770 2453.948 3.540 1959.75 40.868 20.853 2462.587 4.230 1960.00 40.692 20.903 2517.365 3.873 1960.25 40.650 20.995 2504.800 2.993 1960.50 40.910 21.093 2508.726 2.360 1960.75 41.068 21.186 2476.232 2.307 1961.00 40.919 21.210 2491.154 2.350 1961.25 40.839 21.249 2537.981 2.303 1961.50 41.208 21.305 2579.114 2.303 1961.75 41.762 21.360 2631.831 2.460 1962.00 41.866 21.482 2679.149 2.723 1962.25 42.183 21.538 2708.404 2.717 1962.50 42.475 21.596 2733.339 2.840 1962.75 42.839 21.671 2740.014 2.813 1963.00 43.151 21.732 2775.944 2.907 1963.25 43.603 21.754 2810.598 2.940 1963.50 44.182 21.794 2863.512 3.293 1963.75 44.730 21.923 2885.796 3.497 1964.00 45.175 22.001 2950.490 3.530 1964.25 45.693 22.073 2984.751 3.477 1964.50 46.422 22.180 3025.492 3.497 1964.75 47.030 22.282 3033.640 3.683 1965.00 47.455 22.380 3108.151 3.890 1965.25 47.860 22.479 3150.167 3.873 1965.50 48.482 22.578 3214.076 3.867 1965.75 49.294 22.717 3291.826 4.167 1966.00 50.025 22.857 3372.325 4.610 1966.25 50.595 23.071 3384.007 4.587 1966.50 51.054 23.293 3406.292 5.043 1966.75 51.396 23.498 3433.681 5.210 1967.00 52.181 23.611 3464.114 4.513 1967.25 52.689 23.759 3464.310 3.660 1967.50 53.394 23.977 3491.798 4.300 1967.75 54.288 24.242 3518.205 4.753 1968.00 55.166 24.503 3590.655 5.050 1968.25 55.962 24.777 3651.618 5.520 1968.50 56.921 25.017 3676.455 5.197 1968.75 57.907 25.367 3691.966 5.587 1969.00 58.838 25.622 3750.180 6.093 1969.25 59.469 25.966 3760.881 6.197 1969.50 60.069 26.345 3784.245 7.023 1969.75 61.144 26.678 3766.280 7.353 1970.00 61.976 27.051 3759.997 7.210 1970.25 62.940 27.437 3767.066 6.677 1970.50 63.752 27.655 3800.541 6.327 1970.75 64.630 28.009 3759.801 5.353 1971.00 65.987 28.429 3864.057 3.840 1971.25 67.241 28.809 3885.851 4.250 1971.50 68.440 29.097 3916.676 5.010 1971.75 68.868 29.329 3927.867 4.230 1972.00 70.347 29.814 3997.666 3.437 1972.25 71.458 29.989 4092.105 3.770 1972.50 72.593 30.264 4131.079 4.220 1972.75 74.394 30.620 4198.718 4.863 1973.00 76.249 31.025 4305.330 5.700 1973.25 77.399 31.542 4355.102 6.603 1973.50 78.876 32.147 4331.934 8.323 1973.75 80.575 32.703 4373.263 7.500 1974.00 82.342 33.371 4335.370 7.617 1974.25 84.316 34.110 4347.936 8.153 1974.50 85.930 35.164 4305.821 8.190 1974.75 87.030 36.240 4288.936 7.360 1975.00 88.288 37.077 4237.593 5.750 1975.25 89.848 37.622 4268.614 5.393 1975.50 91.731 38.324 4340.867 6.330 1975.75 93.236 39.005 4397.806 5.627 1976.00 95.035 39.443 4496.761 4.917 1976.25 97.154 39.866 4530.335 5.157 1976.50 98.856 40.405 4552.030 5.150 1976.75 100.824 41.096 4584.623 4.673 1977.00 102.743 41.781 4639.990 4.630 1977.25 104.631 42.452 4731.092 4.840 1977.50 107.167 43.036 4815.812 5.497 1977.75 109.545 43.762 4815.321 6.110 1978.00 112.226 44.493 4830.832 6.393 1978.25 114.390 45.350 5021.183 6.477 1978.50 117.096 46.133 5070.661 7.313 1978.75 119.741 47.074 5137.416 8.570 1979.00 121.614 47.929 5147.430 9.383 1979.25 123.647 49.092 5152.338 9.377 1979.50 127.066 50.102 5189.446 9.673 1979.75 130.323 51.088 5204.662 11.843 1980.00 132.797 52.209 5221.253 13.353 1980.25 135.139 53.362 5115.917 9.617 1980.50 137.945 54.572 5107.376 9.153 1980.75 141.240 56.105 5202.110 13.613 1981.00 142.254 57.566 5307.544 14.390 1981.25 144.502 58.582 5266.117 14.907 1981.50 146.416 59.661 5329.829 15.053 1981.75 147.944 60.704 5263.368 11.750 1982.00 150.370 61.563 5177.077 12.813 1982.25 152.778 62.330 5204.859 12.420 1982.50 155.495 63.193 5185.225 9.317 1982.75 158.837 63.866 5189.839 7.907 1983.00 163.119 64.413 5253.845 8.107 1983.25 167.928 64.881 5372.336 8.397 1983.50 171.249 65.542 5478.360 9.140 1983.75 174.552 66.020 5590.469 8.800 1984.00 177.869 66.838 5699.830 9.170 1984.25 180.872 67.439 5797.902 9.797 1984.50 183.802 67.989 5854.251 10.320 1984.75 186.192 68.392 5902.354 8.803 1985.00 189.345 69.180 5956.937 8.183 1985.25 192.935 69.542 6007.789 7.460 1985.50 197.755 69.876 6101.737 7.107 1985.75 202.138 70.299 6148.564 7.167 1986.00 205.488 70.660 6207.368 6.897 1986.25 210.024 71.001 6232.008 6.140 1986.50 215.147 71.455 6291.695 5.523 1986.75 220.922 71.960 6323.404 5.353 1987.00 226.332 72.514 6365.028 5.537 1987.25 230.262 72.904 6435.023 5.657 1987.50 233.403 73.450 6493.434 6.043 1987.75 238.582 73.948 6606.820 5.863 1988.00 242.793 74.564 6639.118 5.723 1988.25 247.451 75.296 6723.544 6.210 1988.50 252.141 76.178 6759.376 7.010 1988.75 255.717 76.786 6848.612 7.727 1989.00 258.453 77.588 6918.116 8.540 1989.25 260.307 78.342 6963.471 8.410 1989.50 262.948 78.913 7013.144 7.843 1989.75 266.102 79.433 7030.913 7.653 1990.00 271.255 80.389 7112.100 7.760 1990.25 276.980 81.326 7130.261 7.747 1990.50 284.121 82.053 7130.752 7.477 1990.75 291.204 82.689 7076.857 6.990 1991.00 300.478 83.662 7040.828 6.023 1991.25 304.240 84.194 7086.477 5.560 1991.50 309.072 84.772 7120.738 5.377 1991.75 315.060 85.200 7154.116 4.540 1992.00 322.200 85.766 7228.234 3.893 1992.25 328.552 86.212 7297.935 3.680 1992.50 336.969 86.587 7369.500 3.083 1992.75 347.711 87.042 7450.687 3.070 1993.00 355.655 87.729 7459.718 2.960 1993.25 364.571 88.204 7497.514 2.967 1993.50 374.768 88.599 7535.996 3.003 1993.75 384.060 89.030 7637.406 3.060 1994.00 393.191 89.598 7715.058 3.243 1994.25 401.592 89.980 7815.682 3.987 1994.50 409.724 90.525 7859.465 4.477 1994.75 416.370 90.958 7951.647 5.280 1995.00 422.470 91.554 7973.735 5.737 1995.25 429.518 91.891 7987.970 5.597 1995.50 431.316 92.281 8053.056 5.367 1995.75 433.390 92.734 8111.958 5.260 1996.00 434.471 93.302 8169.191 4.930 1996.25 438.116 93.615 8303.094 5.020 1996.50 444.437 94.064 8372.697 5.097 1996.75 449.251 94.455 8470.572 4.977 1997.00 454.811 94.963 8536.051 5.060 1997.25 459.796 95.291 8665.831 5.047 1997.50 466.976 95.541 8773.720 5.047 1997.75 475.934 95.864 8838.414 5.090 1998.00 483.455 96.096 8936.191 5.053 1998.25 489.109 96.284 8995.289 4.977 1998.50 498.397 96.620 9098.858 4.823 1998.75 510.427 96.901 9237.081 4.253 1999.00 520.884 97.274 9315.518 4.407 1999.25 532.830 97.701 9392.581 4.453 1999.50 545.080 98.022 9502.237 4.650 1999.75 574.268 98.475 9671.089 5.043 2000.00 578.603 99.292 9695.631 5.520 2000.25 573.803 99.780 9847.892 5.713 2000.50 577.725 100.241 9836.603 6.017 2000.75 582.461 100.687 9887.749 6.017 2001.00 590.008 101.507 9875.576 4.817 2001.25 598.671 102.290 9905.911 3.660 2001.50 620.967 102.690 9871.060 3.170 2001.75 631.849 103.122 9910.034 1.907 2002.00 645.855 103.553 9977.280 1.723 2002.25 658.142 103.944 10031.568 1.717 2002.50 670.112 104.347 10090.666 1.643 2002.75 677.501 104.926 10095.771 1.333 2003.00 690.194 105.742 10126.007 1.157 2003.25 700.982 106.076 10212.691 1.040 2003.50 708.865 106.616 10398.723 0.930 2003.75 717.792 107.204 10466.951 0.917 2004.00 724.084 108.180 10543.621 0.917 2004.25 733.901 109.185 10634.232 1.077 2004.50 748.706 109.807 10728.671 1.487 2004.75 757.684 110.677 10796.408 2.007 2005.00 763.221 111.778 10875.827 2.537 2005.25 767.811 112.357 10946.117 2.863 2005.50 776.069 113.487 11049.980 3.360 2005.75 784.041 114.536 11086.107 3.827 2006.00 795.846 115.536 11217.261 4.393 2006.25 803.723 116.317 11291.674 4.703 2006.50 804.451 117.109 11314.057 4.907 2006.75 808.304 117.742 11356.368 4.903 2007.00 813.986 118.935 11357.840 4.983 2007.25 818.497 119.531 11491.351 4.737 2007.50 822.512 119.984 11625.746 4.303 2007.75 824.472 120.826 11620.739 3.390 2008.00 823.653 121.613 11645.968 2.043 2008.25 827.799 121.951 11727.351 1.627 2008.50 861.125 123.134 11712.429 1.493 2008.75 1404.863 NaN NaN 0.297