Year	% change from 1990
1991	5.74705950855945
1992	10.3965296378246
1993	16.9898295873607
1994	22.9960017080082
1995	27.2010015139164
1996	31.7476029657234
1997	38.7640231357478
1998	34.3717247001281
1999	25.1426575055316
2000	27.4319708085866
2001	33.4575521136602
2002	39.7373937347153
2003	39.2599277978339
2004	43.6386398043554
2005	42.7846356896083
2006	41.5977640619541
2007	41.9480998408447
2008	40.5904273902411
2009	58.4323201739063
2010	66.7957377431
2011	68.4636951205311
2012	70.131652497962