Year	per 100,000 population
2000	8.5
2001	8.1
2002	8
2003	7.8
2004	7.7
2005	7.9
2006	7.7
2007	8
2008	8.3
2009	8.5
2010	8.7
2011	8.9
2012	8.9
2013	8.7
2014	8.5
2015	8.5
2016	8.5
2017	8.7
2018	8.8
2019	9