Year	% change from 1990
1991	3.62603757099169
1992	9.07965632736274
1993	14.9100771807194
1994	25.5042230959662
1995	29.7664555118684
1996	32.2957623416339
1997	26.3606742391146
1998	24.174493956604
1999	23.9205621086355
2000	16.9570045143439
2001	20.9762268821902
2002	17.9718217562254
2003	29.4852191641182
2004	39.5705912334353
2005	37.7448303480413
2006	37.7475607980195
2007	35.9072375127421
2008	34.5201689238386
2009	40.9722222222222
2010	40.8620940731032
2011	42.2707150138343
2012	43.6793359545653