Year	per 1,000 adults
2004	3.95
2005	6.33
2006	8.63
2007	11.97
2008	14.39
2009	17.25
2010	22.02
2011	26.73
2012	31.38
2013	32.95
2014	33.31
2015	39.06
2016	40.09
2017	34.48
2018	37.62
2019	50
2020	48.1
2021	51.06