Year	% change from 1990
1991	-6.62019378315577
1992	-17.5720110482704
1993	-26.2445745100618
1994	-32.5074531982989
1995	-36.189661975536
1996	-29.7278486562322
1997	-30.7417028365996
1998	-34.4255557016967
1999	-36.4812135560524
2000	-28.9923933535008
2001	-29.018150729975
2002	-31.1927309395414
2003	-31.8048796527686
2004	-32.3057784207988
2005	-33.9410978122671
2006	-34.2041518698759
2007	-33.9317813143934
2008	-34.9533079047744
2009	-35.4717436099785
2010	-34.0534438160375
2011	-35.1229599223459
2012	-34.773918660948