Year	% change from 1990
1991	-5.58083947432874
1992	-14.0085999770585
1993	-22.2754596833448
1994	-29.5338217194374
1995	-31.0935363762909
1996	-29.5025096183954
1997	-28.9173453538732
1998	-32.9155286319712
1999	-33.4724810034753
2000	-31.2731934312792
2001	-28.3097045811774
2002	-29.5167705753056
2003	-32.1460570004247
2004	-35.3257853601977
2005	-37.0104384004167
2006	-36.6255475742422
2007	-37.0415954910575
2008	-37.7689042934781
2009	-37.0980192770935
2010	-38.2333154554671
2011	-36.96898811577
2012	-36.8398639482058