Year	% change from 1990
1991	0.104693248781063
1992	-1.44317150748308
1993	-0.928778678472075
1994	-4.00925288903511
1995	-4.67151246846738
1996	-5.73579412321895
1997	-7.79446222567876
1998	-8.71985083704744
1999	-9.20074182644849
2000	-10.4144855573171
2001	-11.3366835172943
2002	-12.3348588635298
2003	-13.213285074731
2004	-14.5401972221391
2005	-15.6819518809887
2006	-15.9240425553129
2007	-16.4037370504422
2008	-17.1932238541075
2009	-17.5716151675591
2010	-16.3302523605835
2011	-18.8606555597199
2012	-20.1657788290508