Year	per 1,000 female adults
1990	77.112
1991	76.351
1992	73.864
1993	73.332
1994	71.241
1995	70.337
1996	69.158
1997	66.885
1998	64.675
1999	64.134
2000	63.354
2001	62.08
2002	61.736
2003	60.737
2004	58.657
2005	57.71
2006	56.008
2007	55.294
2008	54.726
2009	54.228
2010	53.275
2011	52.91
2012	51.099
2013	51.743
2014	49.597
2015	50.173
2016	49.545
2017	48.026
2018	48.283
2019	46.582
2020	46.195