Year	per 100,000 adults
2004	19.79
2005	19.6
2006	19.4
2007	19.45
2008	19.82
2009	19.68
2010	21.55
2011	21.87
2012	21.85
2013	21.48
2014	20.85
2015	20.07
2016	18.87
2017	17.89
2018	17.35
2019	16.76
2020	16.15
2021	15.2