Year	Measure
1971	0.00399
1972	0.00333
1973	0.00339
1974	0.00356
1975	0.00392
1976	0.00421
1977	0.00307
1978	0.00363
1979	0.00344
1980	0.00286
1981	0.00343
1982	0.00463
1983	0.00747
1984	0.00549
1985	0.00599
1986	0.01462
1987	0.01414
1988	0.01493
1989	0.01647
1990	0.01655
1991	0.01618
1992	0.01331
1993	0.01383
1994	0.01435
1995	0.0163
1996	0.0157
1997	0.01512
1998	0.01673
1999	0.01797
2000	0.0193
2001	0.01643
2002	0.01421
2003	0.01316
2004	0.02141
2005	0.02569
2006	0.02346
2007	0.02078
2008	0.02313
2009	0.01538
2010	0.01968