Year	Number
1996	57.4468078613281
1998	56.9148941040039
2000	62.962963104248
2002	62.4338607788086
2003	63.3165817260742
2004	54.8543701171875
2005	58.2524261474609
2006	59.9033813476563
2007	63.2850227355957
2008	53.3653831481934
2009	63.5071105957031
2010	59.7156410217285
2011	63.5071105957031
2012	62.5592422485352
2013	64.4549789428711
2014	60
2015	60
2016	53.8095245361328
2017	55.238094329834
2018	57.0754699707031
2019	58.0188674926758
2020	53.7735862731934
2021	52.8301887512207
2022	55.1886787414551