Year	% change from 1990
1991	-0.302770576325528
1992	-1.13917097648155
1993	-4.14272939315862
1994	-11.2903439802788
1995	-19.0185563071012
1996	-19.0745463085076
1997	-20.8659609980549
1998	-19.1135535606722
1999	-21.6922778908487
2000	-22.5982014207131
2001	-24.4076602813299
2002	-26.5652655014024
2003	-27.5701666166914
2004	-28.8194601077874
2005	-35.3896612206882
2006	-37.7805138873778
2007	-40.1721626204382
2008	-42.4778361854622
2009	-40.31678134445
2010	-39.7873972079299
2011	-39.1852711800092
2012	-38.5831451520885