Year	per 100,000 people
2000	18
2001	17
2002	17
2003	16
2004	16
2005	17
2006	17
2007	17
2008	17
2009	16
2010	17
2011	15
2012	14
2013	13
2014	12
2015	12
2016	10
2017	9.6
2018	9.7
2019	9.4
2020	7.8
2021	8.2
2022	8.2