Year	Number
1996	68.3060073852539
1998	62.8415298461914
2000	59.5628433227539
2002	67.5675659179688
2003	74.594596862793
2004	75.1243743896484
2005	74.0196075439453
2006	73.6585388183594
2007	72.8155364990234
2008	70.3883514404297
2009	73.2057418823242
2010	73.684211730957
2011	72.9857788085938
2012	74.407585144043
2013	74.407585144043
2014	78.8461532592773
2015	84.2857131958008
2016	80.476188659668
2017	79.0476226806641
2018	80.476188659668
2019	80.476188659668
2020	81.4285736083984
2021	80.9523773193359
2022	79.7169799804688