Year	% change from 1990
1991	0.237738563777978
1992	2.0949351809268
1993	3.73946149131006
1994	1.64818780572251
1995	3.20435866470048
1996	8.1376209257803
1997	12.4378557028168
1998	16.8669373824984
1999	25.2599097454661
2000	24.3461322039205
2001	22.4827046032483
2002	16.6933259522433
2003	29.3530495372756
2004	38.787142752474
2005	34.4509011891466
2006	40.1588857655397
2007	44.2658013244019
2008	54.378489875055
2009	40.087045304212
2010	36.8138706089639
2011	39.8859904305876
2012	42.670472348204