Year	% change from 1990
1991	16.4102923887304
1992	23.3725509352481
1993	12.7120773512176
1994	25.6210244115318
1995	21.9552638831331
1996	20.4526599921173
1997	75.7132916474049
1998	17.8459785811042
1999	5.35138419674706
2000	0.553224327365154
2001	4.83055326389878
2002	26.397563217136
2003	23.2340878067738
2004	45.1330091056071
2005	53.3044081075905
2006	82.2322322484825
2007	71.2960870723933
2008	80.2100138177122
2009	96.4242126572671
2010	100.000912589302
2011	117.991476267025
2012	124.684057780602