Year	Number
1996	62.5
1998	61.4130439758301
2000	64.1304321289063
2002	64.3243255615234
2003	65.9459457397461
2004	64.6766204833984
2005	60.294116973877
2006	66.6666641235352
2007	67.4757308959961
2008	66.9902877807617
2009	68.4210510253906
2010	66.9856491088867
2011	66.8246459960938
2012	71.0900497436523
2013	67.2985763549805
2014	67.788459777832
2015	67.1428604125977
2016	68.5714263916016
2017	71.4285736083984
2018	74.2857131958008
2019	71.9047622680664
2020	72.3809509277344
2021	68.5714263916016
2022	63.6792449951172