Year	% change from 1990
1991	29.2566060910818
1992	15.1906090669656
1993	-3.04615917268782
1994	-6.53457919271939
1995	-8.69786535980579
1996	-14.139569774583
1997	-12.6541009080155
1998	-20.4472481318292
1999	-29.733901581505
2000	-26.2077677986291
2001	-28.4271093946426
2002	-19.5926089268271
2003	-16.5720044349737
2004	-12.7239641080386
2005	-8.15317970298867
2006	-3.78188667735567
2007	1.6962949834513
2008	5.96763623324004
2009	8.39862829068037
2010	14.1849087244505
2011	18.523317436093
2012	22.8617261477356