Year	per 100,000 people
2000	18
2001	20
2002	17
2003	16
2004	21
2005	16
2006	14
2007	16
2008	14
2009	12
2010	13
2011	14
2012	13
2013	11
2014	12
2015	11
2016	9.4
2017	9.6
2018	10
2019	10
2020	9.9
2021	10
2022	10