Year	% change from 1990
1991	-1.65877012624532
1992	-12.0648211607418
1993	-18.5881581691946
1994	-23.5122222553314
1995	-25.7073611649135
1996	-13.7386890749625
1997	-14.5441361979399
1998	-16.3517983253375
1999	-17.2713728061027
2000	-18.1398929248984
2001	-18.0504981276756
2002	-16.2355850889478
2003	-16.7169264082164
2004	-17.8211508090229
2005	-21.5318295141889
2006	-22.6306902271621
2007	-24.9752177756588
2008	-26.4023560495446
2009	-26.8703874767822
2010	-27.6633193281484
2011	-28.0004815312112
2012	-29.1306153166612