Year	% change from 1990
1991	-11.269191238218
1992	31.5243310608981
1993	7.08157294222587
1994	-6.23565539996177
1995	7.72098684257345
1996	-19.5084847109482
1997	-20.3735764572758
1998	-64.9752892530802
1999	-61.4198028634582
2000	-78.8522796176486
2001	-78.6772136287903
2002	-74.1509569116934
2003	-78.5991198119662
2004	-56.6035685791292
2005	-74.5258465266596
2006	-77.2357045976842
2007	-60.0271930787177
2008	-78.4105301036889
2009	-69.6148341157157
2010	-62.8341718101954
2011	-39.8113397576102
2012	-39.6404123202626