Year	% change from 1990
1991	-10.1068859486988
1992	-19.1199984389162
1993	-17.7602488979591
1994	-18.6888599917155
1995	-19.1852592535395
1996	-10.599653987662
1997	-18.3083848851127
2004	-21.4782368384188
2005	-19.1011208258245
2006	-19.3262436620749
2007	-13.0024885217625
2008	-18.0457231746081
2009	-18.7677562869428
2010	-14.4534455584017
2011	-11.7443668808935
2012	-9.32588065246005