Year	% change from 1990
1991	-0.850752403294119
1992	-2.16507361172279
1993	-4.00163205228004
1994	1.70447097473887
1995	0.640447467030736
1996	1.45783166338469
1997	2.02698553110541
1998	-2.28690557130287
1999	-7.41246245183733
2000	-9.90500810440611
2001	-13.1918995240201
2002	-15.3705299171536
2003	-15.566696645409
2004	-15.2871486413724
2005	-17.2160756142431
2006	-19.9774458140018
2007	-18.5557377391152
2008	-22.7650437469066
2009	-23.9766904819389
2010	-25.9496761319511
2011	-26.7765981589874
2012	-27.5958268386924