Year	per 100,000 adults
2004	24.22
2005	20.85
2006	20.67
2007	22.03
2008	23.34
2009	21.6
2010	21.51
2011	21.52
2012	20.09
2013	21.78
2014	18.75
2015	31.21
2016	30.96
2017	33.59
2018	33.01