Year	% change from 1990
1991	3.66168357560444
1992	7.18832481185629
1993	12.9888993857901
1994	18.5171908083368
1995	29.5342897269101
1996	33.1187499824035
1997	31.3674181298634
1998	32.0789043047631
1999	30.4833691665674
2000	30.5612564773515
2001	32.1847145722599
2002	40.6465906967026
2003	59.9661477881996
2004	82.8213787884812
2005	100.467166625795
2006	120.244306209178
2007	134.390133366855
2008	157.458544241081
2009	172.749830451021
2010	187.303978348165
2011	209.922084567424
2012	219.952477201313