Year	per 100,000 population
2000	13.4
2001	13.4
2002	12.5
2003	10.1
2004	8.9
2005	9
2006	7.9
2007	7.7
2008	7.1
2009	7
2010	6.5
2011	6.5
2012	5.9
2013	5.3
2014	5.4
2015	5.5
2016	5.5
2017	5.5
2018	5.2
2019	5.1