Year	per 100,000 population
2000	12.5
2001	12.2
2002	12.1
2003	11.7
2004	11
2005	9.6
2006	9.1
2007	8.6
2008	8.4
2009	7.8
2010	6.8
2011	6.4
2012	6.4
2013	5.5
2014	5.1
2015	5.7
2016	5.2
2017	4.9
2018	4.8
2019	4.9