Year | Value | 2021 | 34.974323773152 | 2020 | 30.535948516142 | 2019 | 26.500481945193 | 2018 | 23.237073019641 | 2017 | 20.078852318378 | 2016 | 17.329783428438 | 2015 | 14.193072792762 | 2014 | 11.844293074899 | 2013 | 9.3388949202959 | 2012 | 7.9030670628039 | 2011 | 6.7680058735456 | 2010 | 5.9034906298556 | 2009 | 4.8285322369219 | 2008 | 4.1006789585098 | 2007 | 3.6665065660021 | 2006 | 2.9064221046199 | 2005 | 2.218916779896 | 2004 | 1.7272177676359 | 2003 | 1.3149934064346 | 2002 | 0.7367745527032 | 2001 | 0.39197994684769 | 2000 | 0.16639707201615 | 1999 | 0.078658849542737 | 1998 | 0.040128919657559 | 1997 | 0.021203705427276 | 1996 | 0.0071087137932822 | 1995 | 0.00095891982056736 | 1994 | 0.00020383068257021 | 1993 | 5.6758616094344E-6 |
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