Year	% change from 1990
1991	1.50650555590104
1992	13.3847547621409
1993	17.4639005097882
1994	25.6845498720067
1995	28.6397412904885
1996	34.6598806964584
1997	37.2765579802102
1998	40.7388482787716
1999	46.5646866223046
2000	42.8684282624005
2001	35.0217580212218
2002	36.7055885086721
2003	39.6785964605607
2004	43.845984472723
2005	46.8122692044582
2006	50.1824513869163
2007	54.9478698317346
2008	53.8376981038838
2009	59.6583259517978
2010	62.930853361526
2011	64.5601618951413
2012	66.1894704287565