Year	per 100,000 population
2000	22.8
2001	22
2002	22.7
2003	23.5
2004	23.6
2005	25.6
2006	26.7
2007	26.6
2008	18.3
2009	13.6
2010	12.1
2011	11.8
2012	12.9
2013	9.7
2014	11.2
2015	10.5
2016	8.1
2017	8.2
2018	7.5
2019	8.1