Year | Value | 2020 | 0.82742444168158 | 2019 | 0.79950694950739 | 2018 | 0.82218644281389 | 2017 | 0.82020311085417 | 2016 | 0.83418294264032 | 2015 | 0.84509000056086 | 2014 | 0.85025167412461 | 2013 | 0.86817393687143 | 2012 | 0.87405910677172 | 2011 | 0.88735582722645 | 2010 | 0.8952837672702 | 2009 | 0.91735759905346 | 2008 | 0.91736052443108 | 2007 | 0.93764671996529 | 2006 | 0.9422246802973 | 2005 | 0.83705689723438 | 2004 | 0.85906571473485 | 2003 | 0.87740091243699 | 2002 | 0.88543438661436 | 2001 | 0.9009455368249 | 2000 | 0.92715373423718 | 1999 | 0.9325679400894 | 1998 | 0.96603281988473 | 1997 | 1.0039082551227 | 1996 | 1.0476360093449 | 1995 | 1.0449757907364 | 1994 | 0.6884991350862 | 1993 | 0.73488882184515 | 1992 | 0.75636717969576 | 1991 | 0.85342255114565 |
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