Year	% change from 1990
1991	-3.12435306678327
1992	-5.9877230974639
1993	-12.6914050051987
1994	-13.4952885816433
1995	-16.360054243533
1996	-20.1096500919954
1997	-21.4782990977244
1998	-23.410783111932
1999	-23.2947131163747
2000	-23.1549173902627
2001	-22.3440556577726
2002	-20.9928520421574
2003	-18.4197733029706
2004	-14.5380577000463
2005	-9.63287921044491
2006	-5.25013200345186
2007	0.198877447297474
2008	4.85144668805084
2009	10.4095479783119
2010	14.9716337956749
2011	20.3771996899226
2012	25.7829981893718