Year % change from 1990 1991 7.81304756267429 1992 11.9273322672886 1993 20.6582973322378 1994 21.4646040762958 1995 35.7298725163661 1996 34.5192344503244 1997 40.3471418516784 1998 36.5947822706752 1999 42.4020755478203 2000 43.2457822029431 2001 10.3111849293083 2002 19.7524538169996 2003 27.9771948888751 2004 30.1885014415163 2005 32.2593374620479 2006 33.4617298784061 2007 37.5857326701475 2008 34.3372411823083 2009 75.2736524988736 2010 124.729292376013 2011 126.976585299774 2012 129.223878223534