Year	Number
1996	57.3770484924316
1998	58.4699440002441
2000	49.1803283691406
2002	43.2432441711426
2003	33.5135116577148
2004	32.3383102416992
2005	30.3921566009521
2006	27.3170738220215
2007	30.5825233459473
2008	41.262134552002
2009	38.7559814453125
2010	46.4114837646484
2011	47.8672981262207
2012	47.8672981262207
2013	49.2891006469727
2014	42.3076934814453
2015	40
2016	42.8571434020996
2017	44.2857131958008
2018	40.476188659668
2019	46.6666679382324
2020	40.476188659668
2021	39.523811340332
2022	35.3773574829102