Year	% change from 1990
1991	-0.839691171061219
1992	-1.14780022872586
1993	-1.16521314056505
1994	0.688737379331439
1995	-0.0939359049785149
1996	-2.54560917946394
1997	-3.77491712776193
1998	-3.08774768775073
1999	-5.84123691469513
2000	-7.83662788599677
2001	-8.4402283845641
2002	-7.97404433752892
2003	-7.33145917094993
2004	-7.85964374673878
2005	-9.49608570355878
2006	-9.2431009185627
2007	-8.9285834265368
2008	-8.2742320560703
2009	-11.5090918044269
2010	-11.9687193525954
2011	-13.1719829305186
2012	-15.1277188864475