Year	% change from 1990
1991	0.654415493467897
1992	4.73062712805776
1993	-6.97254352708219
1994	-5.24788099780252
1995	-2.82581922677551
1996	8.06210910144647
1997	20.5916302431721
1998	22.5568085774311
1999	28.2147255560117
2000	29.5428750815001
2001	23.3590108908261
2002	16.5120378643356
2003	19.0475960493589
2004	24.5229528386177
2005	26.2258820120258
2006	29.3192629977542
2007	34.0682427374369
2008	33.9982130351839
2009	35.3278114510637
2010	37.0167346840211
2011	38.3869020308614
2012	39.7570693777016