Year	% change from 1990
1991	-4.99325189466034
1992	-9.84496660552998
1993	-16.9131743779631
1994	-12.1998823407274
1995	-15.9975083918746
1996	-11.3565422016126
1997	-9.56189223794858
1998	-11.6807973146001
1999	-9.35944907775894
2000	-11.2240024916081
2001	-12.3196179534208
2002	-9.87853410388622
2003	-6.11897428798837
2004	-2.18050316641865
2005	2.44073779285048
2006	6.72907222202999
2007	7.47586254628509
2008	11.9462227912932
2009	12.4839948783611
2010	15.1925805446932
2011	16.8704193161314
2012	18.5478774252172