Year	Measure
1973	0.00417
1974	0.00511
1975	0.00473
1976	0.00571
1977	0.00437
1978	0.00542
1979	0.00539
1980	0.00643
1981	0.00662
1982	0.00652
1983	0.00667
1984	0.00863
1985	0.00883
1986	0.00932
1987	0.00791
1988	0.0092
1989	0.00928
1990	0.00846
1991	0.00701
1992	0.0059
1993	0.00654
1994	0.00745
1995	0.00774
1996	0.00853
1997	0.0072
1998	0.00588
1999	0.00891
2000	0.00867
2001	0.00774
2002	0.0075
2003	0.00822
2004	0.0088
2005	0.00843
2006	0.00981
2007	0.0083
2008	0.00939
2009	0.00918
2010	0.00719