Year | Value | 2022 | 0.25730802415876 | 2021 | 0.2533779119931 | 2020 | 0.25021570319241 | 2019 | 0.24590163934426 | 2018 | 0.24331320103537 | 2017 | 0.24201898188093 | 2016 | 0.24158757549612 | 2015 | 0.24158757549612 | 2014 | 0.24158757549612 | 2013 | 0.24158757549612 | 2012 | 0.24158757549612 | 2011 | 0.24158757549612 | 2010 | 0.24158757549612 | 2009 | 0.24158757549612 | 2008 | 0.24158757549612 | 2007 | 0.24158757549612 | 2006 | 0.24158757549612 | 2005 | 0.24158757549612 | 2004 | 0.24158757549612 | 2003 | 0.24158757549612 | 2002 | 0.24158757549612 | 2001 | 0.24158757549612 | 2000 | 0.24158757549612 | 1999 | 0.24158757549612 | 1998 | 0.24158757549612 | 1997 | 0.24158757549612 | 1996 | 0.24158757549612 | 1995 | 0.24158757549612 | 1994 | 0.24158757549612 | 1993 | 0.24158757549612 | 1992 | 0.24158757549612 | 1991 | 0.24158757549612 | 1990 | 0.24158757549612 |
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