Year	% change from 1990
1991	-5.15702175783509
1992	-8.62826120866941
1993	-12.2387288389703
1994	-17.5435240069825
1995	-21.5005626658061
1996	-21.3867626194507
1997	-26.5793751512339
1998	-23.8667277481572
1999	-27.8354069369428
2000	-24.5649554318247
2001	-24.9100399588148
2002	-22.4586430469898
2003	-19.9280886366931
2004	-21.8334864734217
2005	-20.019692786468
2006	-19.8180573798548
2007	-18.5513625724338
2008	-16.1865780590031
2009	-17.6930629606949
2010	-14.064461906426
2011	-14.0003326918387
2012	-13.3539782909068