| Year | Value | | 2022 | 89.87304314 | | 2021 | 90.07384089 | | 2020 | 86.31019103 | | 2019 | 83.35153377 | | 2018 | 80.72684288 | | 2017 | 70.3223544 | | 2016 | 66.4 | | 2015 | 64.5707871 | | 2014 | 61.46 | | 2013 | 57.69 | | 2012 | 54.45376868 | | 2011 | 51.40466106 | | 2010 | 46.4 | | 2009 | 41.8 | | 2008 | 39.3 | | 2007 | 34 | | 2006 | 29.4 | | 2005 | 20.08818956 | | 2004 | 17.06309834 | | 2003 | 15.93713672 | | 2002 | 11.4194702 | | 2001 | 11.12143768 | | 2000 | 10.53905775 | | 1999 | 9.972765285 | | 1998 | 6.987069365 | | 1997 | 3.363239668 | | 1996 | 1.847472089 | | 1995 | 0.310128582 | | 1994 | 0.062474386 |
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