Year	per 100,000 population
2000	17.8
2001	17.3
2002	17
2003	15.4
2004	15.4
2005	14.5
2006	16.4
2007	16.1
2008	16.8
2009	15.9
2010	14
2011	13.3
2012	14.9
2013	13.6
2014	14.2
2015	16.5
2016	16.6
2017	14.7
2018	14.4
2019	14.8