Year	% change from 1990
1991	2.86971512762613
1992	5.74038375901125
1993	8.61659601690221
1994	11.4976365946531
1995	14.3912665693721
1996	17.2783157229486
1997	20.1572103807618
1998	-99.915593815782
1999	-99.9062948293852
2000	-99.931545153986
2001	-99.7610875802645
2002	-99.5786843855562
2003	-99.3476403389257
2004	-99.0486421609334
2005	-98.7482133696492
2006	-98.497856043579
2007	-98.2403456510497
2008	-98.0269696785733
2009	-97.6294737754385
2010	-97.348358263594
2011	-97.3483582635939
2012	-97.348358263594