Year	Number
1996	37.634407043457
1998	40.1069526672363
2000	44.1489372253418
2002	49.7354507446289
2003	46.560848236084
2004	42.8571434020996
2005	40.4878044128418
2006	38.0487823486328
2007	34.9514579772949
2008	26.2135925292969
2009	23.9234447479248
2010	17.619047164917
2011	20.3791465759277
2012	23.222749710083
2013	28.4360198974609
2014	30.769229888916
2015	30.9523811340332
2016	26.6666660308838
2017	20.4761905670166
2018	15.7142858505249
2019	13.3333330154419
2020	14.2857141494751
2021	13.8095235824585
2022	14.1509437561035