Year	per 100 people
1970	0.02673003
1971	0.0266686
1972	0.0266686
1973	0.0266686
1974	0.0266686
1975	0.039097856
1976	0.041468865
1977	0.062338611
1978	0.0608108
1981	0.093630724
1982	0.09806309
1983	0.099426597
1984	0.100587295
1985	0.099634248
1986	0.116742227
1987	0.137000658
1988	0.14778871
1989	0.162935568
1990	0.177224422
1991	0.19053794
1992	0.206114358
1993	0.222284891
1994	0.260899139
1995	0.290179076
1996	0.320632018
1997	0.332723002
1998	0.367982932
1999	0.410437234
2000	0.447845675
2001	0.473772393
2002	0.490078227
2003	0.511404279
2004	0.633832707
2005	0.657179053
2006	0.661891577
2007	0.79111889
2008	0.974850827
2009	0.974190324
2010	0.893245545
2011	0.852448151
2012	0.825991666
2013	0.779189277
2014	0.68572418
2015	0.40108411
2016	0.392866633
2017	0.383144505
2018	0.376408781
2019	0.359356134
2020	0.348651693
2021	0.368196766