Year	Measure
1971	0.00463
1972	0.0038
1973	0.00402
1974	0.00511
1975	0.00689
1976	0.0072
1977	0.00631
1978	0.00399
1979	0.00604
1980	0.00231
1981	0.00528
1982	0.00667
1983	0.00625
1984	0.00683
1985	0.00607
1986	0.00895
1987	0.00645
1988	0.00587
1989	0.00851
1990	0.00749
1991	0.00683
1992	0.00626
1993	0.00543
1994	0.00656
1995	0.00967
1996	0.01047
1997	0.01016
1998	0.00722
1999	0.00487
2000	0.0082
2001	0.00848
2002	0.00994
2003	0.0096
2004	0.00786
2005	0.00747
2006	0.01038
2007	0.01029
2008	0.00896
2009	0.00895
2010	0.00689