Year	% change from 1990
1991	0.982358791215687
1992	1.46125972570368
1993	2.63941297124441
1994	3.82557457022221
1995	5.23998019863736
1996	6.64112352860873
1997	7.56304406913908
1998	8.11103750352045
1999	11.7715638865867
2000	10.5730984363015
2001	11.7884167687762
2002	12.4119378348329
2003	14.8799232813424
2004	15.6371818087462
2005	17.7539474743911
2006	19.1476383983535
2007	21.2492354044188
2008	23.191711182493
2009	26.009400334919
2010	27.0826996604752
2011	28.5233770529262
2012	29.9640134604094