Year	per 100,000 population
2000	12.7
2001	13.5
2002	16.1
2003	15.1
2004	15.2
2005	14.8
2006	15.3
2007	14.7
2008	12.3
2009	10.4
2010	9.2
2011	8.5
2012	8.2
2013	7.8
2014	8
2015	7.8
2016	7.8
2017	8
2018	8.1
2019	7.7