Year	% change from 1990
1991	2.29008594641777
1992	-7.23452293023568
1993	-12.3241623581548
1994	-5.54161350970255
1995	-5.7711676626603
1996	-3.80128248170281
1997	-2.03703081984826
1998	-13.0224770026187
1999	-23.6965352850332
2000	-28.6577586785738
2001	-31.0741623581548
2002	-31.9399214396025
2003	-32.966830054388
2004	-34.4507486738736
2005	-35.4780769489022
2006	-37.4639092190962
2007	-38.436262002283
2008	-38.7816423823273
2009	-41.9005573088028
2010	-47.6444470556637
2011	-48.868898118782
2012	-50.0933491819004