Year	per 100,000 population
2000	6.8
2001	5.6
2002	4.8
2003	4.9
2004	5
2005	4.4
2006	4.6
2007	20.1
2008	16.6
2009	15.7
2010	13.4
2011	11
2012	11.5
2013	13.1
2014	12.8
2015	14
2016	16.6
2017	18.1
2018	20.4
2019	22.9