Year | Value | 2017 | 80.50546556 | 2016 | 77.00999989 | 2015 | 73.13999995 | 2014 | 69.27 | 2013 | 65.4 | 2012 | 61.53415931 | 2011 | 57.7 | 2010 | 54.04 | 2009 | 50.64202838 | 2008 | 48.41870215 | 2007 | 46.15047362 | 2006 | 43.851443 | 2005 | 38.55987756 | 2004 | 36.16178784 | 2003 | 33.71668179 | 2002 | 31.19229426 | 2001 | 25.38022753 | 2000 | 16.11312704 | 1999 | 8.497176323 | 1998 | 4.50128419 | 1997 | 2.344571647 | 1996 | 1.356106888 | 1995 | 0.659530909 | 1994 | 0.34845391 |
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