Year	% change from 1990
1991	-7.50542049342697
1992	-7.71186745903115
1993	-10.7837925445705
1994	-23.4709886547812
1995	-37.0941833243292
1996	-26.5223122636413
1997	-41.9633351341617
1998	-47.357320367369
1999	-52.0943634071673
2000	-44.1329731676571
2001	-41.5822798487304
2002	-32.5687736358725
2003	-30.1660363767333
2004	-25.059319286872
2005	-21.7093462992977
2006	-16.998667386998
2007	-14.3976949396723
2008	-8.43536826940392
2009	-8.13614262560778
2010	-2.69447145687016
2011	0.0486774429099945
2012	2.79198481558753