Year	Per 100 People
1970	0.73093
1975	0.69185
1976	0.6578
1977	0.59824
1978	0.62336
1979	0.67542
1980	0.731
1981	0.79747
1982	0.88769
1983	0.92026
1984	0.9039
1985	0.9511
1986	0.94616
1987	0.90796
1988	0.90756
1989	0.85233
1990	0.96714
1991	1.02662
1992	1.10381
1993	1.18821
1994	1.20765
1995	1.19863
1996	1.26631
1997	1.25319
1998	1.16542
1999	1.26139
2000	1.35232
2001	1.35551
2002	1.35684
2003	1.34047
2004	1.44054
2005	1.35052
2006	1.41935
2007	1.74363
2008	1.81181
2009	2.01257
2010	2.17049
2011	2.12972
2012	2.26456
2013	2.30693
2014	2.4022
2015	2.46945
2016	2.64503
2017	3.82263