Year	Number
1996	68.3417053222656
1998	69
2000	68.6567153930664
2002	58.7064666748047
2003	62.6865653991699
2004	59.6153831481934
2005	60.2870826721191
2006	62.6794242858887
2007	59.3301429748535
2008	58.6538467407227
2009	60.1895751953125
2010	60.6635055541992
2011	58.6854476928711
2012	59.1549301147461
2013	58.2159614562988
2014	62.5
2015	60.9523811340332
2016	58.0952377319336
2017	59.0476188659668
2018	60
2019	58.0952377319336
2020	55.7142868041992
2021	55.7142868041992
2022	61.3207550048828