Year	% change from 1990
1991	0.321343239500638
1992	3.97284234019939
1993	3.61559779215794
1994	2.04089212098917
1995	-2.6768581579976
1996	-2.11287159180742
1997	-2.15460907365781
1998	-2.07307950106025
1999	0.0691498110317879
2000	2.63688921351375
2001	2.95911672169766
2002	3.10785071422381
2003	3.45448403806599
2004	3.85205123806458
2005	4.28251323308084
2006	4.72358645229636
2007	5.22072230603123
2008	5.64481756652795
2009	6.11330311492486
2010	6.54429567115109
2011	7.60973862786258
2012	8.6751815845741