Year	% change from 1990
1991	-2.00540708305442
1992	-7.78829362779374
1993	-6.68257131852804
1994	-7.69368837103208
1995	-8.37611759470808
1996	-7.78679789250897
1997	-8.95085387788069
1998	-10.998889416551
1999	-12.5084602527045
2000	-14.4192620789973
2001	-17.527773934569
2002	-20.387619799048
2003	-18.2745197754901
2004	-23.8891361006929
2005	-30.764283337135
2006	-30.8162601382807
2007	-31.8464478156656
2008	-32.2603925557255
2009	-34.759766216575
2010	-34.7429391946213
2011	-35.1707553639722
2012	-35.5817445113696