Year	% change from 1990
1991	-10.6904171662432
1992	31.7232201332391
1993	7.54704870184617
1994	-5.82317644066708
1995	7.80975378443818
1996	-18.9707651044476
1997	-19.667219112193
1998	-70.2201118119934
1999	-99.4932034294477
2000	-99.0590725436437
2001	-98.8075374810533
2002	-97.7548166635458
2003	-98.2206223350093
2004	-97.866610024697
2005	-97.5964427352482
2006	-97.2610626517944
2007	-96.9536309086285
2008	-96.6461991654626
2009	-96.3201351954385
2010	-96.022019565701
2011	-96.0220195657012
2012	-96.0220195657012