Year	per 100,000 population
2000	1.2
2001	1.2
2002	1.1
2003	1.1
2004	1.1
2005	1
2006	1
2007	1
2008	1
2009	0.9
2010	0.9
2011	0.9
2012	0.9
2013	0.9
2014	0.8
2015	0.8
2016	0.8
2017	0.8
2018	0.7
2019	0.7