| Year | Value | | 2019 | 112.93278973558 | | 2018 | 122.814762754 | | 2017 | 116.167316581 | | 2016 | 101.497829095 | | 2015 | 96.842629422051 | | 2014 | 91.027332 | | 2013 | 81.61638 | | 2012 | 104.31310349061 | | 2011 | 97.607570393435 | | 2010 | 86.150756974213 | | 2009 | 72.741 | | 2008 | 100.993 | | 2007 | 106.723 | | 2006 | 100.705 | | 2005 | 96.825 | | 2004 | 79.505 | | 2003 | 71.971 | | 2002 | 72.973 | | 2001 | 89.642 | | 2000 | 96.152 | | 1999 | 89.0999983102 | | 1998 | 23.5999999791 | | 1997 | 29.2000002638 | | 1996 | 83.3000015021 | | 1995 | 94.7999985218 | | 1994 | 66.0000013709 | | 1993 | 45.4000007509 |
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