Year	Per 100 People
1970	0.7089
1975	0.78473
1976	0.88043
1977	0.95571
1978	0.99014
1979	0.92853
1980	0.94855
1981	0.98718
1982	1.0463
1983	1.12099
1984	1.1564
1985	1.16913
1986	1.16194
1987	1.18263
1988	1.14611
1989	1.1385
1990	1.1178
1991	1.14013
1992	1.25321
1993	1.50929
1994	1.88585
1995	2.09467
1996	2.36976
1997	2.56583
1998	2.90028
1999	3.03572
2000	3.27214
2001	3.09274
2002	3.31865
2003	3.91163
2004	4.0394
2005	4.10588
2006	4.54775
2007	4.50915
2008	4.548
2009	4.49453
2010	4.50222
2011	4.95225
2012	5.08963
2013	5.4656
2014	5.64731
2015	5.8207
2016	5.96163
2017	6.04505