Year % change from 1990 1991 -0.0256618460635183 1992 5.06604941992912 1993 7.61740335219405 1994 11.5148616620994 1995 15.3378499743186 1996 19.0484713805384 1997 24.1185605414715 1998 26.3618877786531 1999 30.2148065112414 2000 37.049531281114 2001 36.5423712456219 2002 39.9676078535654 2003 49.8616696594648 2004 56.263386951374 2005 63.4752789961627 2006 69.9050362933681 2007 72.4277555789152 2008 78.5272576474057 2009 80.4194859092013 2010 87.9174549425197 2011 90.808104093051 2012 93.6992221689467