Year	% change from 1990
1991	5.31063611928837
1992	8.22219377959812
1993	10.4021502623832
1994	12.1044413157558
1995	11.5479329322923
1996	14.5787789581467
1997	12.184820171509
1998	9.44579546908997
1999	7.28938947907336
2000	4.62204018942789
2001	5.56252399846411
2002	7.60988096761808
2003	12.7372328170997
2004	16.1576859081019
2005	16.1633175476769
2006	19.3001407909894
2007	21.3751439907846
2008	22.358633047485
2009	21.9408677844618
2010	31.2361448867273
2011	32.5485063355945
2012	33.8608677844618