Year	Number
1996	59.1397857666016
1998	59.3582878112793
2000	59.5744667053223
2002	58.7301597595215
2003	60.3174591064453
2004	65.0246276855469
2005	62.4390258789063
2006	59.0243911743164
2007	56.7961158752441
2008	55.8252410888672
2009	58.3732070922852
2010	56.1904754638672
2011	55.4502372741699
2012	55.4502372741699
2013	54.502368927002
2014	54.3269233703613
2015	52.3809509277344
2016	54.761905670166
2017	55.238094329834
2018	56.6666679382324
2019	57.6190490722656
2020	51.4285697937012
2021	54.2857131958008
2022	58.0188674926758