Year	Number
1996	62.8415298461914
1998	67.7595596313477
2000	65.5737686157227
2002	68.6486511230469
2003	66.4864883422852
2004	66.6666641235352
2005	63.235294342041
2006	72.6829299926758
2007	68.9320373535156
2008	64.0776672363281
2009	66.0287094116211
2010	61.7224884033203
2011	55.9241714477539
2012	54.028434753418
2013	53.0805702209473
2014	51.9230766296387
2015	49.523811340332
2016	44.761905670166
2017	50.9523811340332
2018	51.9047622680664
2019	50.476188659668
2020	46.1904754638672
2021	43.8095245361328
2022	41.5094337463379