Year	% change from 1990
1991	3.29280961338687
1992	3.89757699974733
1993	5.23738664121065
1994	6.85459190835838
1995	7.48912036387119
1996	7.17747143218128
1997	8.9513434595839
1998	7.81256141730073
1999	8.42182104051437
2000	10.4523120981554
2001	12.3974506555858
2002	15.5830081141028
2003	16.6667602549344
2004	19.9567622202881
2005	20.4986382907039
2006	22.8250554510487
2007	26.4104219894994
2008	30.0053345312632
2009	29.5392649577449
2010	32.927534604262
2011	34.2568099503046
2012	35.5860852963473