Year	% change from 1990
1991	3.66775606296565
1992	6.64202730070993
1993	8.67642005366558
1994	13.5699297375944
1995	17.5928363054112
1996	19.789176226302
1997	24.4103368354865
1998	26.2913732973613
1999	24.2935374671902
2000	22.4656913279668
2001	19.4250692753687
2002	15.6123650135626
2003	20.1415849619442
2004	23.3531106285597
2005	23.5786668421399
2006	25.6792276253354
2007	27.8680733770554
2008	29.6853180086713
2009	33.5872211620715
2010	38.053014849422
2011	39.7096510276151
2012	41.3662872058082