YEAR IO IOse NI NIse SI SIse 1957.5 -4.055 1.892 8.857 2.038 -6.305 1.867 1958.5 -3.492 1.753 9.262 1.461 -5.714 1.804 1959.5 -1.602 1.583 6.730 0.876 -3.054 1.706 1960.5 -0.398 1.364 7.710 0.637 -1.810 1.491 1961.5 -1.716 1.120 6.713 0.359 -3.185 1.253 1962.5 0.395 1.130 6.625 0.283 -0.690 1.278 1963.5 0.299 1.099 6.961 0.271 -0.862 1.243 1964.5 3.322 1.150 6.747 0.283 2.725 1.301 1965.5 1.747 1.222 6.233 0.277 0.966 1.387 1966.5 3.116 1.458 5.858 0.441 2.638 1.635 1967.5 0.714 1.454 6.504 0.532 -0.295 1.615 1968.5 2.392 1.261 5.519 0.638 1.847 1.370 1969.5 1.844 1.129 8.182 0.512 0.740 1.236 1970.5 0.021 1.083 7.614 0.466 -1.302 1.191 1971.5 -0.879 1.084 7.291 0.413 -2.303 1.201 1972.5 0.960 0.916 8.255 0.498 -0.311 0.989 1973.5 0.224 1.091 7.200 0.548 -0.991 1.186 1974.5 1.299 1.142 5.252 0.689 0.610 1.221 1975.5 2.688 0.986 5.123 0.592 2.264 1.055 1976.5 1.499 1.046 3.217 0.782 1.199 1.092 1977.5 -0.791 0.956 -1.118 0.430 -0.734 1.048 1978.5 -2.136 0.977 -0.424 0.360 -2.434 1.085 1979.5 -4.551 0.975 -1.741 0.437 -5.041 1.069 1980.5 -6.462 0.853 -2.222 0.473 -7.201 0.919 1981.5 -4.499 0.751 -3.990 0.387 -4.587 0.814 1982.5 -4.600 0.829 -1.148 0.576 -5.201 0.873 1983.5 -5.782 0.834 -4.452 0.625 -6.013 0.870 1984.5 -4.581 0.938 -3.514 0.624 -4.767 0.992 1985.5 -1.893 1.015 -4.850 0.647 -1.378 1.080 1986.5 -1.094 0.991 -1.568 0.664 -1.012 1.048 1987.5 -1.368 0.997 -4.787 0.648 -0.773 1.058 1988.5 -1.091 0.963 -4.248 0.585 -0.540 1.028 1989.5 -0.590 0.994 -4.617 0.606 0.112 1.062 1990.5 -1.576 0.986 -4.077 0.713 -1.140 1.033 1991.5 -1.157 1.032 -8.162 0.847 0.064 1.064 1992.5 -1.452 1.016 -5.556 0.845 -0.737 1.046 1993.5 -4.212 0.719 -8.027 0.506 -3.548 0.756 1994.5 -5.223 0.663 -7.666 0.511 -4.797 0.690 1995.5 -5.693 0.691 -6.911 0.521 -5.481 0.721 1996.5 -3.352 0.688 -6.163 0.553 -2.862 0.712 1997.5 -4.020 0.766 -7.543 0.447 -3.406 0.822 1998.5 -0.211 1.329 -5.091 1.076 0.639 1.372 1999.5 -0.619 1.156 -5.310 0.940 0.199 1.193 2000.5 -0.076 0.940 -8.516 0.503 1.394 1.016 2001.5 -2.411 0.535 -8.662 0.276 -1.322 0.580 2002.5 -1.839 0.301 -8.671 0.208 -0.648 0.317 2003.5 -1.274 0.178 -9.487 0.163 0.156 0.181 2004.5 -0.765 0.135 -8.972 0.139 0.664 0.134 2005.5 -0.490 0.118 -8.542 0.135 0.913 0.115 2006.5 -0.012 0.110 -7.072 0.119 1.218 0.109 2007.5 0.239 0.106 -7.352 0.124 1.562 0.103 2008.5 0.065 0.100 -6.661 0.124 1.236 0.096 2009.5 -0.338 0.103 -6.136 0.131 0.672 0.098 2010.5 -0.160 0.106 -8.570 0.129 1.306 0.102 2011.5 -0.487 0.108 -9.406 0.127 1.067 0.105 2012.5 -0.226 0.106 -8.596 0.131 1.232 0.102 2013.5 0.325 0.108 -8.536 0.118 1.869 0.106 2014.5 -0.133 0.105 -9.608 0.114 1.518 0.104 2015.5 -0.924 0.100 -11.288 0.117 0.881 0.097 2016.5 -0.910 0.108 -12.051 0.122 1.031 0.105 2017.5 -1.527 0.100 -13.678 0.122 0.590 0.096 2018.5 -1.182 0.101 -14.847 0.132 1.199 0.095 2019.5 -0.653 0.100 -14.945 0.139 1.837 0.093 2020.5 -0.249 0.104 -14.946 0.151 2.312 0.096 2021.5 -0.109 0.109 -14.528 0.170 2.403 0.098