Year	per 100,000 adults
2004	18.24
2005	18.23
2006	18.09
2007	17.94
2008	17.8
2009	17.66
2010	17.51
2011	17.36
2012	17.15
2013	16.39
2014	15.28
2015	15.38
2016	15.3
2017	13.29
2018	12.91
2019	12.69
2020	12.96
2021	11.63