Year	Per 100 People
1960	0.34367
1965	0.5108
1970	0.56088
1975	0.64949
1976	0.66577
1977	0.65441
1978	0.68715
1979	0.78586
1980	0.86348
1981	0.97203
1982	1.08551
1983	1.12863
1984	1.16181
1985	1.17716
1986	1.28568
1987	1.28028
1988	1.47416
1989	1.50117
1990	1.57887
1991	1.62033
1992	1.67433
1993	1.76813
1994	1.93136
1995	2.19923
1996	2.30218
1997	2.49732
1998	2.82639
1999	2.99475
2000	3.00132
2001	3.14458
2002	3.2435
2003	4.24861
2004	4.06437
2005	3.98699
2006	3.95238
2007	3.93953
2008	3.89698
2009	3.8251
2010	4.4034
2011	6.18849
2012	3.65058
2013	3.6179
2014	3.42831
2015	3.26002
2016	3.1271