Year	per 100,000 population
2000	38.1
2001	38
2002	38.5
2003	38
2004	36.5
2005	36.8
2006	36.6
2007	36
2008	35.8
2009	36.3
2010	36
2011	35.6
2012	34
2013	34
2014	33.6
2015	33.5
2016	33.7
2017	33.2
2018	33
2019	34.9