Year	% change from 1990
1991	2.2306961948596
1992	0.100094906209036
1993	1.61287474424316
1994	5.27667675359649
1995	4.41366932724332
1996	7.82218500732832
1997	9.1035568438167
1998	40.1035618625254
1999	12.0805821669659
2000	16.6626186464211
2001	10.8892945318619
2002	14.8797912022928
2003	21.761505217575
2004	14.9021325504903
2005	29.7799243640132
2006	29.9476767244151
2007	30.7937520800827
2008	30.3585207615275
2009	31.3080521691367
2010	30.1981393493876
2011	32.1177666414045
2012	34.2555064160691