Year	Number
1996	71.5053787231445
1998	64.7058792114258
2000	65.4255294799805
2002	66.137565612793
2003	66.137565612793
2004	68.9655151367188
2005	61.4634132385254
2006	61.9512176513672
2007	62.1359214782715
2008	71.3592224121094
2009	79.9043045043945
2010	77.6190490722656
2011	76.7772521972656
2012	71.0900497436523
2013	72.511848449707
2014	69.711540222168
2015	67.6190490722656
2016	66.6666641235352
2017	73.3333358764648
2018	78.5714263916016
2019	77.6190490722656
2020	85.7142868041992
2021	85.2380981445313
2022	83.9622650146484