Year	per 1,000 adults
2004	7.71
2005	7.24
2006	5.85
2007	5.68
2008	5.61
2009	6.31
2010	4.54
2011	8.91
2012	9.9
2013	10.82
2014	9.68
2015	10.33
2016	11.45
2017	13.18
2018	14.6
2019	14.62
2020	15.19
2021	15.84