Year	% change from 1990
1991	16.225493861072
1992	20.8925094351276
1993	22.365397055525
1994	28.1555260103957
1995	28.1171678688802
1996	31.8681390125054
1997	34.5684871614
1998	37.070543222799
1999	30.3682706654487
2000	40.7353710825123
2001	39.978935529066
2002	46.0200177487672
2003	59.2737308493728
2004	64.5092920972476
2005	74.1527889294503
2006	77.9242394198169
2007	77.6892145357852
2008	88.1678136184405
2009	86.0756695608643
2010	96.0494364928956
2011	100.264532583291
2012	104.479596166786