Year	per 100,000 population
2000	14.5
2001	14
2002	13.7
2003	12.8
2004	13
2005	13.1
2006	13.2
2007	12.9
2008	13.3
2009	13
2010	12.7
2011	12.5
2012	12.3
2013	12
2014	11.7
2015	11.6
2016	11.5
2017	11.3
2018	11.3
2019	10.9