Year	% change from 1990
1991	-3.86357393365232
1992	-10.9461539935735
1993	-18.7020486907416
1994	-21.7648637080855
1995	-22.3963357374201
1996	-19.6474999840295
1997	-21.0851608864245
1998	-24.3881716377388
1999	-24.8519538262031
2000	-24.5012425018685
2001	-29.2687445301171
2002	-26.262464944838
2003	-32.4682666939229
2004	-30.0758916308396
2005	-34.2908157072678
2006	-33.9091216885249
2007	-33.439590134088
2008	-32.4015101667955
2009	-36.7017165051521
2010	-40.2797385954938
2011	-39.6825359814487
2012	-39.0853333674036