Year	% change from 1990
1991	0.280085503347371
1992	-1.0619109659735
1993	0.671505840284703
1994	-5.59528039570678
1995	-0.475006063067174
1996	7.29970728075666
1997	15.6393292837685
1998	21.2793917756609
1999	31.0152676491655
2000	20.6815451515203
2001	11.3055052649983
2002	22.7954405734816
2003	21.4282894254468
2004	21.9843995871474
2005	24.1445435215422
2006	24.6679413207898
2007	26.2776151559759
2008	27.2556019920701
2009	21.5760590627344
2010	22.1366812744285
2011	23.3580480871728
2012	24.5794148999171