Year	per 100,000 female population
2000	3.6
2001	3.3
2002	3.9
2003	4.2
2004	4.1
2005	3.8
2006	3.3
2007	3.2
2008	3.2
2009	3
2010	2.9
2011	2.8
2012	2.5
2013	2.5
2014	2.1
2015	1.9
2016	1.7
2017	1.9
2018	1.6
2019	1.8