Year	per 100,000 population
2000	20.2
2001	19.6
2002	20.9
2003	18.7
2004	18.5
2005	19
2006	18.8
2007	19.5
2008	18.8
2009	16
2010	14.5
2011	14.6
2012	14.7
2013	15.1
2014	14.7
2015	15
2016	14.1
2017	14.6
2018	14.5
2019	14.5