Year	% change from 1990
1991	-24.2166431097287
1992	-40.3919160817236
1993	-36.7588372360365
1994	-31.8646599005304
1995	-31.0374748106045
1996	-27.9128080124984
1997	-28.5307754326739
1998	-31.3508973178149
1999	-33.3485859403739
2000	-29.1998900952849
2001	-28.2288528381702
2002	-24.5812394195505
2003	-23.5738352420206
2004	-23.9878081561615
2005	-24.4285045214786
2006	-24.5675910319141
2007	-24.8835417886899
2008	-25.1238462347109
2009	-26.4388438089106
2010	-25.2725310128623
2011	-24.5252563229909
2012	-23.7779816331196