Year	Number
1996	28.4153003692627
1998	25.1366119384766
2000	21.8579235076904
2002	35.1351356506348
2003	42.7027015686035
2004	50.2487564086914
2005	44.6078414916992
2006	52.1951217651367
2007	48.5436897277832
2008	53.8834953308105
2009	51.6746406555176
2010	48.3253593444824
2011	46.445499420166
2012	45.971565246582
2013	47.8672981262207
2014	56.25
2015	51.4285697937012
2016	51.9047622680664
2017	53.8095245361328
2018	53.3333320617676
2019	47.6190490722656
2020	52.8571434020996
2021	47.1428565979004
2022	49.5283012390137