Year	% change from 1990
1991	-2.06381978555034
1992	-8.22365234581566
1993	-17.2983782130161
1994	-24.5485962986967
1995	-29.6957482210543
1996	-29.6015584029787
1997	-29.1844300625232
1998	-52.9155590144372
1999	-52.7997578380149
2000	-55.0257520180195
2001	-56.419214164994
2002	-51.6065730082928
2003	-55.7519351876539
2004	-53.8178374322605
2005	-51.4649324785064
2006	-49.045793160976
2007	-48.3793141328922
2008	-45.6020616094619
2009	-45.1195591021166
2010	-41.6409472471235
2011	-41.2543010534721
2012	-40.8628458111616