Year	% change from 1990
1991	3.65604130371662
1992	5.75185104529616
1993	9.87178789198606
1994	17.1335111788618
1995	18.7488657810685
1996	22.4035460220674
1997	25.6102097851336
1998	27.4687409262486
1999	27.9194795296167
2000	28.8919588414634
2001	32.6314786585366
2002	38.6698334059234
2003	42.2247023809524
2004	41.5754754645761
2005	40.0803480691057
2006	39.5143728222997
2007	39.5241271051104
2008	39.0566020615563
2009	40.7345655487805
2010	40.6597070993031
2011	43.2305757300659
2012	45.726585911351