Year	% change from 1990
1991	12.0749828749431
1992	15.7297953029509
1993	20.9480584586301
1994	26.8304676766942
1995	32.4405980567366
1996	38.0689058715028
1997	30.0913081247393
1998	31.9731509722057
1999	30.1121643393172
2000	28.1987501578567
2001	26.3710569317255
2002	25.7654613432933
2003	27.9691404560814
2004	30.8155353924221
2005	32.3152694278509
2006	33.5149801196267
2007	35.6428880308289
2008	37.6343695108931
2009	50.7406826296434
2010	61.4651777753116
2011	63.0798295530647
2012	64.6944813308178