Year	% change from 1990
1991	-15.1359619298498
1992	18.282347427425
1993	-16.4552169827475
1994	-10.9318390073681
1995	-7.15115877398501
1996	-14.9788664361364
1997	-16.3035576466445
1998	57.8875577553605
1999	33.0781592980211
2000	33.8680029236264
2001	21.6724824159575
2002	25.3962118993794
2003	42.2541176411976
2004	32.799905729748
2005	53.7501279057079
2006	40.7444347487036
2007	56.9426269366206
2008	44.3903518329183
2009	32.001104475973
2010	38.2710954376899
2011	56.2338194602304
2012	56.1469590899715