Year | Value | 2014 | 61.407523214514 | 2013 | 61.540518113848 | 2012 | 61.704395614155 | 2011 | 62.849347210462 | 2010 | 64.404325859436 | 2009 | 65.202549955408 | 2008 | 62.267254035903 | 2007 | 64.360598936738 | 2006 | 67.366181442756 | 2005 | 69.975808308573 | 2004 | 78.898624475278 | 2003 | 66.865937469316 | 2002 | 50.587691938785 | 1996 | 29.363646606773 | 1995 | 27.578788859694 | 1994 | 28.050755225656 | 1993 | 26.369806882576 | 1992 | 24.626052776032 | 1991 | 21.409866089076 | 1990 | 21.242238641764 |
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