Year	per 100,000 population
2000	17.5
2001	18.7
2002	18.9
2003	19.3
2004	18.9
2005	18.5
2006	18.6
2007	18.5
2008	18.4
2009	18.2
2010	18.7
2011	18.7
2012	17.9
2013	17.7
2014	17.9
2015	18
2016	18.3
2017	18.4
2018	18.6
2019	18.8