Year	% change from 1990
1991	0.342015511612592
1992	2.49870928489584
1993	5.43251911122029
1994	16.670665164511
1995	18.6889789243977
1996	24.876734308455
1997	29.4801249066751
1998	31.3291582618242
1999	26.4374919630193
2000	24.7172422264404
2001	17.0904114742174
2002	22.8413389657773
2003	26.0091088979692
2004	23.5775743768581
2005	25.5099044391003
2006	24.5314560226014
2007	28.7776688053832
2008	10.3948148759474
2009	5.97145264467045
2010	6.25435436415247
2011	7.316897907794
2012	8.37944145143552