Year	% change from 1990
1991	4.58373804788419
1992	-6.55448845284465
1993	-25.9164811828638
1994	-39.7417645787125
1995	-41.3155866013458
1996	-42.8825450653554
1997	-46.8116933157891
1998	-46.8688811766577
1999	-47.7012958463754
2000	-53.5750031129114
2001	-52.1611593064451
2002	-52.3695785189674
2003	-50.0057734518022
2004	-45.1617297280706
2005	-43.6127825673423
2006	-38.8962292604397
2007	-32.9344975659725
2008	-34.1214686197664
2009	-34.7939857289771
2010	-32.0326529238527
2011	-29.454598998894
2012	-29.0911355248915