Year	% change from 1990
1991	37.6062966400041
1992	61.7185299246378
1993	63.8907848819064
1994	91.5699054857158
1995	89.7737040499851
1996	91.7435711642237
1997	99.7003827571159
1998	109.627459076638
1999	117.583184447666
2000	123.378005001901
2001	127.223161416
2002	131.322030910525
2003	141.13454907942
2004	143.210171682571
2007	167.478001232109
2011	187.933869963799
2012	196.645014570808