Year % change from 1990 1991 9.65791707371759 1992 14.0770220421411 1993 14.7723450937685 1994 32.3921782162361 1995 32.8059021049204 1996 42.1910283307442 1997 40.2150296546607 1998 87.3766168596489 1999 73.4325202991624 2000 70.0191647581984 2001 58.7589351014024 2002 88.9485007180111 2003 80.0641138568142 2004 89.083027711493 2005 96.3675042573523 2006 96.3477522781506 2007 104.19622790581 2008 108.432493607299 2009 153.822541812805 2010 191.181542042355 2011 194.093357462778 2012 197.005172883202