Year | Value | 2022 | 70.099932329057 | 2021 | 71.321797422107 | 2020 | 71.498099811675 | 2019 | 73.923273782245 | 2018 | 74.897759117006 | 2017 | 74.892884997758 | 2016 | 74.99105409221 | 2015 | 74.815661447822 | 2014 | 75.69286373514 | 2013 | 76.01309081472 | 2012 | 76.559704787375 | 2011 | 77.053365994475 | 2010 | 77.006930236685 | 2009 | 76.874590104633 | 2008 | 77.570564049212 | 2007 | 76.698279390397 | 2006 | 76.367351801954 | 2005 | 76.656464513749 | 2004 | 77.215828787816 | 2003 | 77.967866759255 | 2002 | 78.784214406218 | 2001 | 76.965963193593 | 2000 | 74.615271664418 | 1999 | 76.093041432326 | 1998 | 76.486350110693 | 1997 | 76.873790142517 | 1996 | 78.015049270093 | 1995 | 78.927282587898 |
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