Year	per 100,000 female population
2000	5.6
2001	5.6
2002	5.4
2003	5.2
2004	5
2005	5
2006	4.8
2007	4.6
2008	4.5
2009	4.3
2010	4.2
2011	4.1
2012	3.8
2013	3.7
2014	3.5
2015	3.5
2016	3.4
2017	3.4
2018	3.3
2019	3.2