Year	per 100,000 population
2000	12
2001	10.9
2002	11
2003	10.7
2004	10.5
2005	9.1
2006	8.9
2007	8.4
2008	8.1
2009	8
2010	8.1
2011	8
2012	7.9
2013	7.5
2014	7.8
2015	8
2016	8.5
2017	8.4
2018	8.8
2019	8.8