Year	Number
1996	63.0434799194336
1998	70.6521759033203
2000	69.0217361450195
2002	73.5135116577148
2003	77.2972946166992
2004	79.1044769287109
2005	76.470588684082
2006	76.9607849121094
2007	78.1553421020508
2008	81.0679626464844
2009	78.9473648071289
2010	79.4258346557617
2011	75.8293838500977
2012	76.7772521972656
2013	76.7772521972656
2014	79.3269195556641
2015	77.1428604125977
2016	81.4285736083984
2017	80
2018	79.523811340332
2019	75.7142868041992
2020	74.7619018554688
2021	73.3333358764648
2022	72.6415100097656