Year	% change from 1990
1991	-20.7292084493571
1992	-25.5062662734495
1993	-27.0728406495556
1994	-28.9358205921212
1995	-24.3473727170069
1996	-23.3456225074229
1997	-27.3421511317872
1998	-33.476806735577
1999	-39.0629982894329
2000	-38.7570345957059
2001	-36.4083544978637
2002	-41.055268117229
2003	-35.2145404238321
2004	-36.2862517581227
2005	-36.5849829721005
2006	-35.3285368428401
2007	-32.8990794210598
2008	-33.645137004888
2009	-39.7397981697297
2010	-37.1377452649596
2011	-32.5105888094942
2012	-37.1401672865778