Year	% change from 1990
1991	0.78692091756225
1992	0.636596182914473
1993	1.58505390096839
1994	3.14436157666562
1995	4.2522797867216
1996	5.33735860339186
1997	5.40753783034069
1998	6.44236998156238
1999	8.14369715794894
2000	10.1153596996827
2001	11.4495955351062
2002	13.0836503164294
2003	14.5383120442503
2004	16.249605501387
2005	17.607511253592
2006	19.2473796986861
2007	20.2656013819909
2008	22.1670846967759
2009	24.0760427221235
2010	26.043967908576
2011	27.3044075876618
2012	28.5648472667475