Year	% change from 1990
1991	3.20432654871849
1992	6.54786905205733
1993	9.81354500450682
1994	11.207592224671
1995	28.1471064317771
1996	29.247620351013
1997	30.1357709496416
1998	30.6105209508214
1999	31.0144831784654
2000	31.3452980401225
2001	32.05317577548
2002	32.7893686202519
2003	33.5618991887721
2004	34.4840279186979
2005	35.1857707136823
2006	35.9644362225756
2007	36.9403636603886
2008	38.0550351343316
2009	39.8369993534716
2010	40.5104270390418
2011	41.9155313094322
2012	43.3206355798226