Year	per 100,000 population
2000	8.7
2001	8.6
2002	8.6
2003	8.8
2004	8.6
2005	8.1
2006	8.6
2007	7.4
2008	7.5
2009	6.7
2010	7
2011	6.6
2012	6.9
2013	6.9
2014	6.4
2015	6.5
2016	6.2
2017	6
2018	6
2019	6.1