Year	Number
1996	77.3869323730469
1998	65
2000	64.1791076660156
2002	64.6766204833984
2003	67.164176940918
2004	61.0576934814453
2005	57.8947372436523
2006	55.9808616638184
2007	62.2009582519531
2008	63.9423065185547
2009	72.0379180908203
2010	72.511848449707
2011	75.5868530273438
2012	72.3004684448242
2013	68.0751190185547
2014	68.75
2015	64.7619018554688
2016	69.523811340332
2017	72.3809509277344
2018	72.3809509277344
2019	72.3809509277344
2020	79.0476226806641
2021	78.5714263916016
2022	80.1886825561523