Year	% change from 1990
1991	2.03732012018345
1992	4.75198987928944
1993	7.96808286331769
1994	11.2013072584471
1995	13.9660534500026
1996	11.7758684307627
1997	41.7841705761425
1998	14.3047282694639
1999	15.6673343524327
2000	18.9407516736071
2001	21.3477149333193
2002	24.5381108006958
2003	27.2916556849929
2004	30.4820515523694
2005	32.9832375731379
2006	36.2335933793685
2007	39.9939381160719
2008	43.2693321385272
2009	46.5803067840388
2010	49.838569395393
2011	51.3369550893469
2012	52.8353407833008