Year	Per 100 000
2000	19
2001	18
2002	18
2003	17
2004	16
2005	17
2006	18
2007	18
2008	18
2009	17
2010	19
2011	16
2012	15
2013	13
2014	12
2015	12
2016	10
2017	10
2018	10
2019	9.9
2020	8.1