Year	per 1,000 people
1965	1.44000005722046
1966	1.5199999809265097
1967	1.5
1968	1.45000004768372
1969	1.45000004768372
1970	1.4394710201402798
1971	1.58000004291534
1972	1.71000003814697
1973	1.76999998092651
1974	1.8500000238418601
1975	1.7797586427230911
1976	1.987031229387548
1977	2.0699999332428
1978	2.14000010490417
1979	2.20000004768372
1980	2.2224557656534754
1981	2.294086215130071
1982	2.2337271255722038
1983	2.26206769362833
1984	2.3081555033093784
1985	2.1194219280195905
1986	2.3657315614909185
1987	2.4799694124506626
1988	2.536711869288796
1989	2.354362741876181
1990	2.278195569385936
1991	2.2721144684452312
1992	2.2775196252355867
1993	2.291488534146519
1994	2.3484849587748906
1995	2.5722218259155705
1996	2.5409773918011562
1997	2.498755906422008
1998	2.2532982606705416
1999	2.504849867826431
2000	1.7080797759298092
2001	1.65809878309513
2002	1.4914387253480572
2003	1.7305298995898188
2004	1.8417153967374817
2005	1.8765782960503323
2006	1.8700611163636163
2007	1.9344827602995283
2008	2.1076050810158202
2009	2.035417746663141
2010	2.1388148564032603
2011	2.2794907623243144
2012	2.5201463048785735
2013	2.817200531311264
2014	2.992028256421818
2015	3.300739706833291
2016	3.4120750835076885
2017	3.6794941056812642