Year	% change from 1990
1991	-0.398249627824798
1992	-8.97654866032599
1993	-24.0221265730964
1994	-38.1705926409363
1995	-49.3002712031817
1996	-48.4519288007112
1997	-49.7428846305571
1998	-48.8535595033297
1999	-45.7839534190348
2000	-44.734795665257
2001	-37.8537961785652
2002	-29.4687306932938
2003	-23.5672183282943
2004	-16.9689996424254
2005	-9.83800553471578
2006	-3.60863137166065
2007	2.12895009431275
2008	6.51410164330566
2009	12.9893721549029
2010	18.4810572723321
2011	18.4810572723321
2012	18.4810572723342