Year	% change from 1990
1991	33.3011586679669
1992	62.3085195727069
1993	73.8761984746149
1994	81.8755296469268
1995	85.5616822536439
1996	87.0817451842512
1997	77.4673471481692
1998	68.1569616982143
1999	77.4673471481684
2000	89.2478348603618
2001	109.388668690881
2002	137.129817174427
2003	175.891421904863
2004	214.27301090265
2005	253.414631365733
2006	291.796220363519
2007	332.077888024559
2008	371.979539952945
2009	411.881191881338
2010	451.402828077076
2011	451.40282807708
2012	451.402828077076