Year	per 1,000 people
2004	1.898
2007	1.037
2008	1.057
2009	1.141
2010	1.153
2011	1.153
2013	0.906
2014	1.39
2015	1.47
2017	1.742
2018	1.676
2019	1.773
2020	1.773