Year	% change from 1990
1991	7.94455877653568
1992	20.0098420267626
1993	26.7003758651263
1994	9.38397572543441
1995	9.09212961611992
1996	6.74182134922947
1997	0.0368186159311445
1998	23.5453031630899
1999	31.4447265678828
2000	21.5795125837793
2001	24.7905947426352
2002	21.224025025868
2003	28.5583406703433
2004	23.3954069469846
2005	24.5870837306081
2006	27.1635681353595
2007	31.6766468318004
2008	39.4378842639209
2009	39.6873767865017
2010	47.7689191002448
2011	52.8609889888644
2012	57.3897432056922