Year	% change from 1990
1991	-17.0350441197673
1992	-19.7990357429984
1993	-23.7508766528113
1994	-26.5708274380723
1995	-23.0028810415735
1996	-26.6216549738898
1997	-22.9552302267446
1998	-13.4861580492001
1999	-11.1549335698769
2000	-11.3438262871218
2001	-12.6154921351719
2002	-9.56217453882562
2003	-13.2129600441808
2004	-11.7721948942763
2005	-11.9904111898775
2006	-11.3861011125854
2007	-10.6373724118887
2008	-10.2004510943804
2009	-7.92494141393406
2010	-7.88999748305952
2011	-8.00707185100359
2012	-8.08920228807309