Year	% change from 1990
1991	2.09574507916719
1992	3.05777697510565
1993	7.28109259336753
1994	8.77920178663065
1995	11.448576003383
1996	16.3358213721729
1997	19.0778765700744
1998	22.5313244016483
1999	26.2105237655796
2000	28.9812108651459
2001	31.062529870782
2002	35.3374930347393
2003	42.5086831747933
2004	47.8650512400917
2005	52.7115512103586
2006	56.7365358482421
2007	61.7867628111241
2008	65.8965419270151
2009	69.9809928222025
2010	70.94566766291
2011	72.6551243395391
2012	74.3645810161682