Year	per 100,000 population
2000	31.3
2001	31.9
2002	32.8
2003	33.3
2004	33.5
2005	33.9
2006	33.7
2007	33.8
2008	33.9
2009	34
2010	34
2011	33.6
2012	33.7
2013	34.5
2014	35
2015	36.9
2016	37.2
2017	36.9
2018	37.4
2019	37.9