Year	Number
1996	57.6086959838867
1998	55.4347839355469
2000	65.760871887207
2002	58.3783798217773
2003	63.7837829589844
2004	61.1940307617188
2005	63.7254905700684
2006	57.8431358337402
2007	56.7961158752441
2008	55.3398056030273
2009	55.5023918151855
2010	54.5454559326172
2011	55.4502372741699
2012	55.9241714477539
2013	55.9241714477539
2014	57.211540222168
2015	60.476188659668
2016	55.238094329834
2017	54.2857131958008
2018	50
2019	51.9047622680664
2020	55.7142868041992
2021	56.6666679382324
2022	58.4905662536621