Year	per 100,000 population
2000	17.9
2001	17.6
2002	17.7
2003	17.6
2004	17.6
2005	17.9
2006	17.9
2007	17.4
2008	17.7
2009	17.9
2010	18.1
2011	18
2012	17
2013	17.1
2014	17.3
2015	17.4
2016	17.8
2017	18.4
2018	19
2019	19.6