Year	Per 100 People
1960	0.93089
1965	0.93577
1970	1.03556
1975	1.90389
1976	2.02891
1981	2.07782
1982	2.11201
1983	2.18243
1984	2.25743
1985	2.33634
1986	2.61623
1987	2.11219
1988	2.13126
1989	2.14574
1990	2.15254
1991	2.1497
1992	3.7925
1993	5.47948
1994	5.81044
1995	5.86044
1996	6.58782
1997	7.24619
1998	7.90419
1999	8.4782
2000	9.08004
2001	10.62301
2002	10.69859
2003	12.28053
2004	13.66164
2005	14.6663
2006	15.74171
2007	17.16798
2008	18.60102
2009	19.71884
2010	20.07311
2011	20.33093
2012	20.47654
2013	20.68447
2014	20.92356
2015	20.04609
2016	18.31042
2017	17.45753