Year | Value | 2020 | 0.45983195441226 | 2019 | 0.47050409809069 | 2018 | 0.4853644419583 | 2017 | 0.12568782663124 | 2016 | 0.10413995368376 | 2015 | 0.10786744708765 | 2014 | 0.11174089521218 | 2013 | 0.11579284081813 | 2012 | 0.12000318008427 | 2011 | 0.12408987829885 | 2010 | 0.12825445684237 | 2009 | 0.13253546980511 | 2008 | 0.1712334631283 | 2007 | 0.1769617090254 | 2005 | 0.15092972711905 | 2004 | 0.15562506808597 | 2003 | 0.16036949130797 | 2002 | 0.16541126409356 | 2001 | 0.17080987366475 | 2000 | 0.17635984462698 | 1999 | 0.18204698177482 | 1998 | 0.18785472255032 | 1997 | 0.19375808334504 | 1996 | 0.19978972131831 | 1995 | 0.20592921697989 | 1994 | 0.2652344009018 | 1993 | 0.27369515833265 | 1992 | 0.28383610168145 | 1991 | 0.59162495710719 |
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