Year	Number
1996	30.4347820281982
1998	30.9782600402832
2000	34.2391319274902
2002	39.4594612121582
2003	48.1081085205078
2004	28.8557205200195
2005	47.0588226318359
2006	23.0392150878906
2007	21.8446598052979
2008	21.3592224121094
2009	23.4449768066406
2010	23.4449768066406
2011	23.222749710083
2012	21.8009471893311
2013	21.8009471893311
2014	18.269229888916
2015	21.9047622680664
2016	17.1428565979004
2017	14.7619047164917
2018	11.4285717010498
2019	13.3333330154419
2020	13.8095235824585
2021	18.5714282989502
2022	19.3396224975586