Year	Number
1996	58.152172088623
1998	64.6739120483398
2000	62.5
2002	57.2972984313965
2003	61.6216201782227
2004	61.1940307617188
2005	60.294116973877
2006	54.4117660522461
2007	57.2815551757813
2008	58.2524261474609
2009	57.4162673950195
2010	59.8086128234863
2011	58.2938385009766
2012	63.5071105957031
2013	64.4549789428711
2014	63.461540222168
2015	64.2857131958008
2016	60
2017	58.5714302062988
2018	60.9523811340332
2019	60.9523811340332
2020	57.1428565979004
2021	55.7142868041992
2022	58.9622650146484