Year	per 100,000 population
2000	10.1
2001	10
2002	9.7
2003	9
2004	8.6
2005	9.1
2006	8.8
2007	8.6
2008	8.5
2009	8
2010	8.1
2011	8.5
2012	8.9
2013	8.9
2014	9
2015	9.2
2016	9.1
2017	8.8
2018	8.6
2019	8