Year	% change from 1990
1991	-27.3018381576167
1992	-46.0168180857807
1993	-42.5773082611451
1994	-37.4082400169026
1995	-37.0533699556307
1996	-33.48303401648
1997	-34.3040777519544
1998	-37.1862243819987
1999	-39.0267483625607
2000	-33.8968941474752
2001	-33.160785970843
2002	-29.5618846397634
2003	-28.29765476442
2004	-28.7548700612719
2005	-29.3230509190788
2006	-29.6254384111557
2007	-30.0365096133531
2008	-30.3922248045637
2009	-30.1136699767589
2010	-29.0108599197127
2011	-28.3009685189098
2012	-27.5910771181069