Year | Value | 2022 | 151.41188594984 | 2021 | 132.11267605634 | 2020 | 125.68876674682 | 2019 | 121.64204740639 | 2018 | 117.71212641704 | 2017 | 114.45001717623 | 2016 | 111.82411542425 | 2015 | 111.38440398488 | 2014 | 111.45310889729 | 2013 | 111.70731707317 | 2012 | 109.80419099966 | 2011 | 103.92992098935 | 2010 | 100 | 2009 | 95.369288904157 | 2008 | 91.514943318447 | 2007 | 86.300240467193 | 2006 | 79.938165578839 | 2005 | 76.915149433184 | 2004 | 74.270010305737 | 2003 | 69.577464788732 | 2002 | 66.478873239437 | 2001 | 63.153555479217 | 2000 | 57.877018206802 | 1999 | 52.70957677774 | 1998 | 47.918779800756 | 1997 | 41.97738852628 | 1996 | 35.482322913088 | 1995 | 28.737832360014 | 1994 | 22.397979388526 | 1993 | 18.842720714531 | 1992 | 15.386305049811 | 1991 | 12.442857437307 | 1990 | 9.2294052902782 | 1989 | 7.1897126073514 | 1988 | 6.1372297492271 | 1987 | 5.3033542425283 | 1986 | 4.880043902439 | 1985 | 4.634786671247 | 1984 | 4.3339115767777 | 1983 | 3.9955723119203 | 1982 | 3.7244371693576 | 1981 | 3.4861319821367 | 1980 | 3.3308665063552 | 1979 | 3.0478477127819 | 1978 | 2.7967957901541 | 1977 | 2.6715752447961 | 1976 | 2.5710746196564 | 1975 | 2.4433277141766 | 1974 | 2.3529245887291 | 1973 | 2.3113880176089 | 1972 | 2.2356448584762 |
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