Year	% change from 1990
1991	3.11917494616065
1992	5.86860035832564
1993	8.36986716615089
1994	10.600693124853
1995	12.6351638706408
1996	14.4640045605082
1997	16.069004831967
1998	17.2769965796189
1999	18.4499248963932
2000	19.5459398809201
2001	20.9507392728523
2002	22.3227373907378
2003	23.5827587454983
2004	25.1232875472791
2005	26.8617550717556
2006	28.7517871038963
2007	31.9176755886132
2008	36.0947481767016
2009	40.3804042926688
2010	45.4340626526956
2011	46.8884032792225
2012	48.3427439057495