Year	% change from 1990
1991	-7.1249593492272
1992	-15.6177699887507
1993	-25.2977981040058
1994	-36.3473166862604
1995	-37.2130419975899
1996	-43.9871834232686
1997	-46.0143170435368
1998	-49.0628229024229
1999	-49.2878263523158
2000	-50.6768729350671
2001	-51.7409656650314
2002	-51.4515654104623
2003	-49.1839783237379
2004	-52.0348444802599
2005	-54.3951083744075
2006	-54.6088384123084
2007	-53.3949283541262
2008	-54.1697045546632
2009	-61.4581373410241
2010	-58.7572826535273
2011	-56.9762606925201
2012	-57.5183766032125