Year	per 100,000 population
2000	27.5
2001	27.6
2002	27.4
2003	27.8
2004	27.6
2005	28.1
2006	27.9
2007	27.7
2008	27.4
2009	27.9
2010	28.2
2011	25.2
2012	23.6
2013	23.8
2014	23.8
2015	23.9
2016	23.8
2017	23.7
2018	23.6
2019	23.5