Year	% change from 1990
1991	4.11217076298813
1992	9.1975964956406
1993	12.9432171079496
1994	12.9725685859107
1995	16.6237056308554
1996	22.8553173936474
1997	26.5247686561712
1998	32.6357344915287
1999	38.8558268796189
2000	45.1518892681715
2001	47.4235741358005
2002	48.7737417868374
2003	48.5973045040218
2004	53.3014138622156
2005	51.6224498008126
2006	56.6425670929586
2007	58.2094645054454
2008	65.4269108399597
2009	67.5694197562206
2010	77.4349105886466
2011	82.5772831575959
2012	87.1951824419521