Year	% change from 1990
1991	3.20657713837247
1992	5.25980549293708
1993	0.448534791837929
1994	3.48224193013145
1995	2.48332119446075
1996	2.86899115505712
1997	21.6815013833936
1998	6.18086221940168
1999	4.10677266251973
2000	2.93332164357729
2001	5.420500064204
2002	10.645500662644
2003	11.1202856238229
2004	18.4175612434909
2005	23.5614821325274
2006	29.4653710140552
2007	25.8494270835308
2008	29.0156476388514
2009	33.2083458567028
2010	33.7772566931156
2011	36.5097576964827
2012	38.9192762942799