Year	% change from 1990
1991	0.929410465599467
1992	4.16451624420175
1993	-0.394433331831023
1994	1.51217390605005
1995	2.11381716258812
1996	2.68458547316015
1997	13.4521213507972
1998	15.2125829656117
1999	6.9570035723004
2000	6.09765790188406
2001	5.58038658840314
2002	12.6553229199195
2003	16.1909062531192
2004	19.4253371598649
2005	23.4982440203055
2006	27.2226710979513
2007	30.7207700723145
2008	27.2866300047278
2009	25.9426842807531
2010	33.1630237075097
2011	38.0788140383168
2012	40.0033080747846