Year	Measure
1990	0.02786
1991	0.02469
1992	0.02512
1993	0.02877
1994	0.02739
1995	0.02321
1996	0.02403
1997	0.02091
1998	0.02052
1999	0.02
2000	0.0204
2001	0.02046
2002	0.02104
2003	0.0257
2004	0.03014
2005	0.0286
2006	0.03005
2007	0.02076
2008	0.03643
2009	0.02957
2010	0.03396