Year	per 100 people
1970	2.037055
1971	2.01894
1972	2.01894
1973	2.01894
1974	2.01894
1975	3.228786425
1976	3.262182488
1977	3.379988733
1978	3.577604198
1979	3.85056461
1980	3.946297469
1981	4.035251961
1982	3.924909267
1983	3.892868265
1984	5.097033493
1985	5.697885515
1986	6.090052667
1987	6.508261442
1988	7.873936247
1989	8.914472045
1990	11.94650775
1991	11.90146117
1992	13.85944543
1993	16.30135603
1994	16.61253578
1995	20.0698401
1996	21.94142977
1997	23.79610689
1998	25.73905837
1999	28.096881
2000	30.65830721
2001	31.13441349
2002	31.59537451
2003	30.0526842
2004	25.57248887
2005	23.58119792
2006	23.64209768
2007	23.69178238
2008	24.28578208
2009	22.72464759
2010	21.90891274
2011	20.85671465
2012	21.28070054
2013	19.25530814
2014	18.7821789
2015	19.85730798
2016	20.14862766
2017	19.76360886
2018	20.50110182
2019	8.847426687
2020	8.337564231
2021	7.894150914