Year | Value | 2021 | 34.81397069 | 2020 | 29.29856532 | 2019 | 26.58827407 | 2018 | 25 | 2017 | 24.4 | 2016 | 23.11998904 | 2015 | 22.7428181 | 2014 | 16.36473996 | 2013 | 15.5 | 2012 | 12 | 2011 | 8.4 | 2010 | 6.4 | 2009 | 4 | 2008 | 3.5 | 2007 | 3 | 2006 | 2.4 | 2005 | 2.4 | 2004 | 2.1 | 2003 | 1.8 | 2002 | 1.1 | 2001 | 0.799846046 | 2000 | 0.401433535 | 1999 | 0.161675528 | 1998 | 0.081648476 | 1997 | 0.033080327 | 1996 | 0.016790484 | 1995 | 0.00768354 | 1994 | 0.00173928 |
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