Year | Value | 2022 | 118.02383316783 | 2021 | 111.70142336975 | 2020 | 109.97186362132 | 2019 | 110.66699768289 | 2018 | 109.66567361801 | 2017 | 107.17477656405 | 2016 | 104.91559086395 | 2015 | 105.07282356835 | 2014 | 106.92651439921 | 2013 | 106.71962926183 | 2012 | 105.86726249586 | 2011 | 103.18603111552 | 2010 | 100 | 2009 | 99.25843130038 | 2008 | 98.841774548136 | 2007 | 89.802080010747 | 2006 | 83.742359745054 | 2005 | 81.508477157722 | 2004 | 78.574937524077 | 2003 | 76.315955132393 | 2002 | 76.159081355193 | 2001 | 74.771689669633 | 2000 | 74.104116448233 | 1999 | 73.980066940174 | 1998 | 73.237765245072 | 1997 | 71.701624990261 | 1996 | 71.384949909581 | 1995 | 68.371214372858 | 1994 | 67.202976050014 | 1993 | 66.531704713026 | 1992 | 63.794061946223 | 1991 | 61.658501002982 | 1990 | 58.448506750291 | 1989 | 54.317094458227 | 1988 | 52.82020594661 | 1987 | 52.70045486568 | 1986 | 51.013960475924 | 1985 | 50.49503912523 | 1984 | 49.437237910188 | 1983 | 48.136608114338 | 1982 | 45.645120347323 | 1981 | 42.568182851321 | 1980 | 37.759289401129 | 1979 | 32.215769002724 | 1978 | 27.866268521031 | 1977 | 25.699889143296 | 1976 | 23.323903352838 | 1975 | 20.957962598134 | 1974 | 19.623981849996 |
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