Year	% change from 1990
1991	2.01857865553272
1992	4.63858881746084
1993	6.78419157443613
1994	9.56049660900875
1995	12.3390107583891
1996	15.0849404643559
1997	17.1946451057061
1998	20.6817328296552
1999	24.6128526299512
2000	23.652992246007
2001	27.7575275587072
2002	31.0678860980405
2003	30.015795170875
2004	32.6043254467935
2005	35.3287162833852
2006	39.0952570305079
2007	40.9487043541653
2008	43.8697064086421
2009	52.8232487242362
2010	53.6610555150551
2011	55.1976660702056
2012	56.7342766253562