Year	Per 100 People
1960	1.05922
1965	2.03343
1970	3.62007
1975	5.20598
1976	5.93701
1977	6.48116
1978	6.99144
1979	7.46796
1980	8.23951
1981	8.44838
1982	9.75834
1983	10.86871
1984	12.01319
1985	13.58416
1986	14.88269
1987	15.78805
1988	16.6888
1989	17.56739
1990	19.24638
1991	20.40977
1992	21.21101
1993	21.57143
1994	22.25079
1995	22.60962
1996	23.36524
1997	23.37495
1998	23.24631
1999	22.43896
2000	22.62895
2001	22.11188
2002	21.69988
2003	21.53651
2004	21.15977
2005	20.94623
2006	20.80812
2007	20.75988
2008	20.72848
2009	20.45327
2010	20.51452
2011	20.38222
2012	23.02109
2013	22.59111
2014	22.12288
2015	21.85639
2016	21.60181