Year	Number
2005	0.04656437567705817
2006	0.037423861932944946
2007	0.032896565939823194
2008	0.03500975187130459
2009	0.09150236029322324
2010	0.09081033791424002
2011	0.06629668103485375
2012	0.06542874807585593
2013	0.062457676973667955
2014	0.058127476897120375
2015	0.06511546248313292
2016	0.09588173417300402
2017	0.1080316178358701
2018	0.11474772690880812
2019	0.10343682129619149
2020	0.12636177024627276
2021	0.20950049499931947
2022	0.1890836267092648
2023	0.16811976404622328