Year	% change from 1990
1991	9.4728304947288
1992	15.5555555555557
1993	18.3454987834555
1994	23.9578264395781
1995	34.0145985401461
1996	80.8921330089213
1997	99.8702351987023
1998	97.7591078669911
1999	173.708885644769
2000	142.234841849148
2001	88.5229683698297
2002	143.582157339823
2003	108.566906244933
2004	88.6903341443633
2005	95.2598264395783
2006	72.4231088402271
2007	74.8365904298459
2008	81.4243925385239
2009	51.9524298459053
2010	45.4610624493101
2011	45.4610624493114
2012	45.4610624493108
