Year	per 1,000 people
2000	2.616
2001	2.55
2002	2.505
2003	2.404
2004	2.408
2005	2.509
2006	2.531
2007	2.609
2008	2.674
2009	2.697
2010	2.775
2011	2.816
2012	2.867
2013	2.899
2014	2.915
2015	2.962
2017	4.546