Year	Number
1996	70.8542709350586
1998	72.5
2000	69.1542282104492
2002	67.6616897583008
2003	65.1741256713867
2004	61.538459777832
2005	62.6794242858887
2006	62.2009582519531
2007	62.6794242858887
2008	66.8269195556641
2009	67.7725143432617
2010	68.7203826904297
2011	72.7699508666992
2012	73.2394332885742
2013	74.1784057617188
2014	78.3653869628906
2015	76.1904754638672
2016	71.4285736083984
2017	64.2857131958008
2018	63.8095245361328
2019	63.3333320617676
2020	67.6190490722656
2021	64.2857131958008
2022	64.1509399414063