Year	per 100,000 adults
2004	16.12
2005	18.01
2006	18.59
2007	20.7
2008	20.41
2009	19.99
2010	20.06
2011	22.87
2012	22.8
2013	22.33
2014	22.09
2015	22.1
2016	21.57
2017	20.53
2018	19.68
2019	18.95
2020	17.18
2021	16.34