Year	Measure
1971	0.00211
1972	0.00329
1973	0.00234
1974	0.00368
1975	0.00487
1976	0.00417
1977	0.00257
1978	0.00185
1979	0.00772
1980	0.01368
1981	0.01674
1982	0.01601
1983	0.00867
1984	0.00318
1985	0.01113
1986	0.00943
1987	0.00801
1988	0.00912
1989	0.01133
1990	0.00908
1991	0.00833
1992	0.00673
1993	0.00684
1994	0.00708
1995	0.01045
1996	0.01015
1997	0.01043
1998	0.00746
1999	0.00928
2000	0.00915
2001	0.00916
2002	0.00865
2003	0.00902
2004	0.00848
2005	0.00686
2006	0.00709
2007	0.00829
2008	0.0086
2009	0.00947
2010	0.00705