Year	% change from 1990
1991	3.42235459482221
1992	16.0619082707419
1993	15.782336513991
1994	12.622835099104
1995	22.6121847464659
1996	25.7627076663963
1997	29.5274834826653
1998	32.5584995386911
1999	41.5478306098565
2000	39.4843247862189
2001	30.8467030347313
2002	30.7984049239305
2003	39.6988798553533
2004	38.6709969844641
2005	44.7002111494331
2006	46.9850833142411
2007	44.1122745314154
2008	46.8658860536109
2009	45.6553372508468
2010	47.2953057951541
2011	48.7682588531056
2012	50.2412119110572