Year	per 1,000 people
1960	23.784
1961	23.638
1962	23.798
1963	23.663
1964	23.437
1965	23.259
1966	23.141
1967	23.061
1968	22.987
1969	23.185
1970	23.472
1971	23.635
1972	23.94
1973	24.343
1974	24.739
1975	25.092
1976	25.305
1977	25.37
1978	25.257
1979	24.985
1980	24.573
1981	24.104
1982	23.617
1983	23.209
1984	22.876
1985	22.61
1986	22.404
1987	22.232
1988	22.069
1989	21.907
1990	21.989
1991	21.844
1992	21.683
1993	21.57
1994	21.419
1995	20.974
1996	20.449
1997	19.985
1998	19.738
1999	19.674
2000	19.366
2001	18.983
2002	18.756
2003	18.453
2004	18.352
2005	18.353
2006	18.194
2007	18.005
2008	17.812
2009	17.849
2010	17.87
2011	17.806
2012	17.729
2013	17.632
2014	17.504
2015	17.346
2016	16.824
2017	16.206
2018	15.187
2019	14.783
2020	14.125
2021	13.902
2022	13.794