Year	per 100,000 female population
2000	4.7
2001	4.7
2002	4.7
2003	4.6
2004	4.6
2005	4.5
2006	4.5
2007	4.3
2008	4.1
2009	4.2
2010	4.2
2011	4.2
2012	4.1
2013	4.1
2014	4.1
2015	4
2016	4
2017	3.9
2018	3.9
2019	3.8