Year	% change from 1990
1991	-16.1596678544925
1992	-37.0090190074412
1993	-46.4361883495016
1994	-44.2904133767458
1995	-7.72499047287946
1996	-6.48947336751954
1997	-17.2574595682376
1998	-45.324022383719
1999	-51.454473735233
2000	-45.6810386901379
2001	-48.728714407012
2002	-57.4816310430358
2003	-57.9977669766602
2004	-55.007253983005
2005	-57.8192588234508
2006	-59.4605978351708
2007	-59.4702920981728
2008	-59.1607442519706
2009	-59.0554444986729
2010	-51.6995045897321
2011	-50.8022318388995
2012	-49.9049590880669