Year | Value | 2014 | 45.160087748099 | 2013 | 50.609515684996 | 2012 | 47.090947137282 | 2011 | 51.251846512957 | 2010 | 56.141146534917 | 2009 | 52.363194588289 | 2008 | 60.98736391879 | 2007 | 62.435452835614 | 2006 | 60.623783713463 | 2005 | 58.90859662354 | 2004 | 58.380084443783 | 2003 | 59.832174333334 | 2002 | 60.497099496002 | 2001 | 62.962530567015 | 2000 | 63.230008990588 | 1999 | 58.727400398083 | 1998 | 59.101350711393 | 1997 | 63.357539632568 | 1996 | 68.245559633092 | 1995 | 68.848555682444 | 1994 | 72.248733974517 | 1993 | 77.632996242502 | 1992 | 82.304130226455 | 1991 | 84.818232435442 | 1990 | 85.708665562655 |
|