Year	Number
1996	13.4408597946167
1998	4.27807474136353
2000	11.1702127456665
2002	9.5238094329834
2003	16.4021167755127
2004	16.2561569213867
2005	24.8780479431152
2006	24.8780479431152
2007	21.3592224121094
2008	19.9029121398926
2009	15.3110046386719
2010	16.1904754638672
2011	14.6919431686401
2012	12.3222751617432
2013	10.9004735946655
2014	14.4230766296387
2015	13.8095235824585
2016	19.0476188659668
2017	20.9523811340332
2018	17.619047164917
2019	24.761905670166
2020	22.8571434020996
2021	24.2857151031494
2022	29.2452831268311