Year	% change from 1990
1991	-14.8667467470873
1992	-28.0708187102016
1993	-22.8150856737916
1994	-18.4749035496159
1995	-15.9623536807573
1996	-14.7770479526332
1997	-14.0898903806112
1998	-15.9616028422958
1999	-17.7304156617897
2000	-16.5753115414555
2001	-14.5209576240102
2002	-15.011762245108
2003	-15.0558794782435
2004	-14.9352887682545
2005	-15.0706975908137
2006	-14.9751476010933
2007	-14.916071553669
2008	-14.8359910256645
2009	-15.4158224858694
2010	-15.6714485310184
2011	-14.8281630163285
2012	-13.9848775016387