Year | Value | 2022 | 179.81383724411 | 2021 | 170.83924311781 | 2020 | 163.50820534422 | 2019 | 155.91264936477 | 2018 | 150.01889757669 | 2017 | 143.73138369889 | 2016 | 136.33901976713 | 2015 | 127.80936907663 | 2014 | 120.57947468183 | 2013 | 114.5951800704 | 2012 | 109.17952883834 | 2011 | 104.44083401029 | 2010 | 100 | 2009 | 94.327512292005 | 2008 | 88.223896141643 | 2007 | 79.652190762225 | 2006 | 78.932836001647 | 2005 | 77.10659529634 | 2004 | 75.757502361518 | 2003 | 74.156514156999 | 2002 | 64.647467725919 | 2001 | 57.824496814978 | 2000 | 52.905272846174 | 1999 | 45.767432848112 | 1998 | 39.821251241311 | 1997 | 35.061883885969 | 1996 | 33.724901300652 | 1995 | 30.212899944292 | 1994 | 25.76113546637 | 1993 | 25.046624845593 | 1992 | 23.859810594134 | 1991 | 22.874028144452 | 1990 | 21.384455155376 | 1989 | 19.994187032238 | 1988 | 19.136774287306 | 1987 | 18.148569767724 | 1986 | 17.562428851697 | 1985 | 16.654152638845 | 1984 | 16.058323443215 | 1983 | 14.949015428488 | 1982 | 13.854239833362 | 1981 | 13.12761886308 | 1980 | 12.149102623005 | 1979 | 10.841184876499 | 1978 | 10.25019982067 | 1977 | 9.6882796037494 | 1976 | 9.2685458992837 | 1975 | 8.6093575569391 | 1974 | 7.7919089653578 | 1973 | 6.3262814401002 | 1972 | 5.8391151077381 | 1971 | 5.5047043203062 |
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