Year | Value | 2022 | 164.39064204394 | 2021 | 153.80123012521 | 2020 | 147.51551825493 | 2019 | 142.9213948804 | 2018 | 137.82200285377 | 2017 | 132.83810080477 | 2016 | 127.20966277772 | 2015 | 121.79182412162 | 2014 | 118.95043099571 | 2013 | 115.01867661049 | 2012 | 110.23093768524 | 2011 | 106.21412393067 | 2010 | 100 | 2009 | 96.283913594587 | 2008 | 94.526567765357 | 2007 | 84.887002530684 | 2006 | 79.466127258514 | 2005 | 74.573471541951 | 2004 | 68.34790059226 | 2003 | 63.532976181538 | 2002 | 60.161822445798 | 2001 | 55.637065466542 | 2000 | 51.858705685427 | 1999 | 48.933658405349 | 1998 | 46.508867182489 | 1997 | 43.623822803295 | 1996 | 39.936522444819 | 1995 | 35.960409933802 | 1994 | 33.17031749517 | 1993 | 29.922169861792 | 1992 | 26.759303137993 | 1991 | 24.316488630118 | 1990 | 18.260225273094 | 1989 | 12.93016842444 | 1988 | 11.608314325973 | 1987 | 10.473726554726 | 1986 | 9.3246322370033 | 1985 | 6.8097245890599 | 1984 | 5.7375589268499 | 1983 | 5.5485342303879 | 1982 | 5.307637640449 | 1981 | 5.2913727246915 | 1980 | 4.7484762126886 | 1979 | 4.2847063178291 | 1978 | 3.848191146623 | 1977 | 3.5536642939507 | 1976 | 3.1637459084037 | 1975 | 2.8573004365998 | 1974 | 2.5250260836033 | 1973 | 2.1674993114453 | 1972 | 1.9047230693031 | 1971 | 1.8946868514298 | 1970 | 1.9033201571275 | 1969 | 1.8597219633618 | 1968 | 1.8215195856522 | 1967 | 1.7870942791892 | 1966 | 1.7784609734883 | 1965 | 1.7663743455153 | 1964 | 1.7806192999146 | 1963 | 1.7840726221922 | 1962 | 1.7813747141663 | 1961 | 1.7455464955211 | 1960 | 1.7552589644298 |
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