Year	% change from 1990
1991	1.54349267623934
1992	5.9023619811664
1993	-1.16603094479213
1994	2.12952545728395
1995	1.75976621383058
1996	1.58869741932168
1997	18.5665628691508
1998	4.91537787573664
1999	2.62275918480355
2000	1.92569653324481
2001	4.44427799949259
2002	9.12019079446884
2003	9.44204909255704
2004	16.3076365332014
2005	21.2566744949524
2006	29.297279093554
2007	30.5810901264922
2008	29.4516983051541
2009	33.1484334355222
2010	33.7130328804919
2011	36.3092178287218
2012	38.6138388573366