Year | Value | 2021 | 99.68701957 | 2020 | 99.5327519 | 2019 | 99.50494117 | 2018 | 99.01095399 | 2017 | 98.25520119 | 2016 | 98.2400163 | 2015 | 98.2 | 2014 | 98.16 | 2013 | 96.5468 | 2012 | 96.20979955 | 2011 | 94.8196868 | 2010 | 93.39 | 2009 | 93 | 2008 | 91 | 2007 | 90.6 | 2006 | 89.51 | 2005 | 87 | 2004 | 83.88 | 2003 | 83.14 | 2002 | 79.12 | 2001 | 49.39299537 | 2000 | 44.47053382 | 1999 | 41.29456671 | 1998 | 36.2642065 | 1997 | 27.47886875 | 1996 | 14.80647932 | 1995 | 11.2158757 | 1994 | 6.794811784 | 1993 | 2.667825265 | 1992 | 1.53916008 | 1991 | 0.505129002 |
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