Year	Per 100 People
1960	0.22982
1965	0.30786
1970	0.32388
1975	0.34832
1976	0.34345
1977	0.33373
1978	0.32556
1979	0.31628
1980	0.31263
1981	0.30527
1982	0.31025
1983	0.32195
1984	0.33001
1985	0.33493
1986	0.32747
1987	0.32097
1988	0.31273
1989	0.30808
1990	0.30773
1991	0.3044
1992	0.29491
1993	0.28399
1994	0.27411
1995	0.31116
1996	0.39942
1997	0.4429
1998	0.62386
1999	0.94494
2000	1.41933
2001	1.60315
2002	2.34258
2003	3.18235
2004	3.40849
2005	1.84395
2006	1.57876
2007	1.06929
2008	1.1112
2009	1.10079
2010	1.5849
2011	1.37519
2012	1.17973
2013	1.12774
2014	1.09997
2015	0.30779
2016	0.34481
2017	0.35349