Year	% change from 1990
1991	-28.9054071127163
1992	-63.0718975339035
1993	-67.74222235309
1994	-68.5543061734232
1995	-66.4516718312307
1996	-63.614028853346
1997	-70.5376739782661
1998	-46.9215393667863
1999	-90.0504776913559
2000	-48.8760378707506
2001	-77.3169938871835
2002	-91.6341884230677
2003	-68.1392318224806
2004	-90.9781473980498
2005	-93.0555908494689
2006	-88.000965731111
2007	-80.9946869102694
2008	-84.9746751043995
2009	-84.6085595740422
2010	-89.9944556062847
2011	-89.9944556062904
2012	-89.9944556062847