Year	% change from 1990
1991	-1.28474102513384
1992	3.73310980612149
1993	8.22905486252752
1994	3.11197870222351
1995	10.8056707599817
1996	16.1348167411937
1997	26.7997561521325
1998	24.8728067473224
1999	37.4655062275243
2000	67.5205665571729
2001	98.6127909880054
2002	109.759427216924
2003	126.802836677054
2004	127.166014352003
2005	135.986043600777
2006	148.110341160028
2007	147.02891477971
2008	153.303457646025
2009	155.870021304262
2010	167.958649627581
2011	170.638236123857
2012	173.317822620132