Year	per 1,000 adults
2008	18.08
2009	16.975
2010	18.685000000000002
2011	21.450000000000003
2012	25.595
2013	26.5
2014	32.195
2015	31.16
2016	32.07
2017	30.95
2018	34.915
2019	38.885000000000005
2020	47.21