Year	% change from 1990
1991	-3.68847471814756
1992	-3.72592344715041
1993	-5.37057830992098
1994	-7.5932330089424
1995	-8.78689027984513
1996	-5.86742833538018
1997	-5.48912083394105
1998	-65.5318568555582
1999	-61.5182258008074
2000	-60.9801504224273
2001	-60.4596582485565
2002	-57.9114027213325
2003	-55.5094003581835
2004	-54.0323953923044
2005	-50.4439837800611
2006	-46.2087724266026
2007	-35.5656238165346
2008	-43.2361871896916
2009	-38.8077026362197
2010	-31.2165907467668
2011	-31.2165907467678
2012	-31.2165907467658