Year	per 100,000 population
2000	5.4
2001	5.8
2002	6.1
2003	6.4
2004	6.6
2005	6.9
2006	7
2007	7.2
2008	7.5
2009	7.6
2010	7.8
2011	7.8
2012	7.8
2013	7.7
2014	7.5
2015	7.3
2016	7.2
2017	7
2018	6.6
2019	6.6