Year	per 1,000 female adults
1960	114.7
1961	116.908
1962	113.193
1963	117.033
1964	116.144
1965	118.208
1966	116.088
1967	118.953
1968	117.753
1969	117.024
1970	118.365
1971	115.528
1972	111.657
1973	111.066
1974	115.173
1975	107.577
1976	112.386
1977	113.946
1978	108.497
1979	102.265
1980	108.073
1981	99.83
1982	104.96
1983	94.997
1984	93.449
1985	97.378
1986	93.876
1987	96.599
1988	88.773
1989	89.472
1990	93.154
1991	85.341
1992	79.587
1993	81.649
1994	76.837
1995	80.833
1996	77.131
1997	76.658
1998	71.375
1999	70.399
2000	67.077
2001	64.107
2002	64.566
2003	64.71
2004	62.964
2005	59.596
2006	59.427
2007	58.429
2008	58.291
2009	56.586
2010	54.4
2011	55.589
2012	53.037
2013	52.498
2014	51.758
2015	52.403
2016	51.88
2017	51.903
2018	51.556
2019	50.809
2020	50.183
2021	49.188