Year	Measure
1971	0.00042
1972	0.00302
1973	0.00347
1974	0.00389
1975	0.00375
1976	0.00612
1977	0.00619
1978	0.00592
1979	0.00347
1980	0.00293
1981	0.00477
1982	0.00285
1983	0.00163
1984	0.0015
1985	0.00163
1986	0.00414
1987	0.00403
1988	0.00773
1989	0.0066
1990	0.00236
1991	0.00452
1992	0.00167
1993	0.00032
1994	0.00228
1995	0.0011
1996	0.00269
1997	0.0042
1998	0.00315
1999	0.00141
2000	0.00212
2001	0.00376
2002	0.00445
2003	0.00129
2004	0.00173
2005	0.0024
2006	0.00516
2007	0.00163
2008	0.0022
2009	0.00251
2010	0.00367