Year	per 100,000 people
2000	6
2001	5.7
2002	4.9
2003	5.5
2004	5.3
2005	4.1
2006	4.3
2007	4.7
2008	4.7
2009	6.2
2010	5.8
2011	4.6
2012	4
2013	4.2
2014	3.7
2015	4.5
2016	4.4
2017	5.2
2018	3.5
2019	3.2
2020	3.1
2021	3.2
2022	3.2