Year	Number
1996	60.6557388305664
1998	57.3770484924316
2000	60.1092910766602
2002	61.0810813903809
2003	62.1621627807617
2004	62.6865653991699
2005	63.7254905700684
2006	67.8048782348633
2007	63.1067962646484
2008	58.2524261474609
2009	60.2870826721191
2010	57.8947372436523
2011	59.7156410217285
2012	60.1895751953125
2013	60.1895751953125
2014	62.980770111084
2015	63.3333320617676
2016	64.2857131958008
2017	64.7619018554688
2018	61.9047622680664
2019	63.3333320617676
2020	60.9523811340332
2021	59.0476188659668
2022	58.0188674926758