Year	per 100,000 population
2000	10.7
2001	10.8
2002	10.6
2003	10.8
2004	10.7
2005	11.4
2006	11.7
2007	11.4
2008	11.2
2009	11.1
2010	10.8
2011	10.8
2012	10.6
2013	10.4
2014	10
2015	9.5
2016	9.2
2017	9
2018	8.9
2019	9