Year	per 100,000 population
2000	17.8
2001	17.7
2002	26.1
2003	26.7
2004	23
2005	22.1
2006	22.1
2007	23.5
2008	23.9
2009	19.5
2010	21.9
2011	18.6
2012	15.8
2013	13.6
2014	11.5
2015	10.1
2016	8.9
2017	8.9
2018	8.3
2019	7.6