Year | Value | 2021 | 22.90158489 | 2020 | 22.86494849 | 2019 | 16.48118911 | 2018 | 11.7 | 2017 | 8.619904916 | 2016 | 6.20997406 | 2015 | 3.799999507 | 2014 | 3 | 2013 | 2.2 | 2012 | 1.679961015 | 2011 | 1.2 | 2010 | 0.72 | 2009 | 0.56 | 2008 | 0.44 | 2007 | 0.37 | 2006 | 0.29605361 | 2005 | 0.238037799 | 2004 | 0.196208375 | 2003 | 0.134914837 | 2002 | 0.092790702 | 2001 | 0.011475782 | 2000 | 0.005902114 | 1999 | 0.001009076 | 1998 | 0.000413065 | 1997 | 0.000211213 | 1996 | 0.000108207 |
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