Year	% change from 1990
1991	-25.5481530858023
1992	-43.963783457716
1993	-45.4033334722851
1994	-38.8647382866753
1995	-42.2142753917607
1996	-44.3216532302618
1997	-50.5017469353407
1998	-52.791696480374
1999	-41.567126555719
2000	-24.5075059668779
2001	-38.6233205516791
2002	-32.4822968156529
2003	-29.5041271570367
2004	-33.3997870636564
2005	-25.2354198386521
2006	-27.7661756577472
2007	-11.0984079414599
2008	-26.7796003127066
2009	-27.0313171649929
2010	-23.448186258973
2011	-21.6007523847841
2012	-19.923895714756