Year	% change from 1990
1991	1.37763927156647
1992	2.78236188398941
1993	4.19105671973798
1994	5.89766830490788
1995	6.05258501460695
1996	5.7579182660884
1997	-0.80058355571766
1998	6.0738905760807
1999	0.0260000072222155
2000	0.726916868588012
2001	13.5878926633035
2002	13.9511705419918
2003	13.6633649064902
2004	15.8087266135352
2005	16.4580045716679
2006	18.3285606468224
2007	19.9813666614907
2008	21.8363949545541
2009	20.8697002415834
2010	19.5837832177176
2011	20.7796210498947
2012	21.9754588820719