Year	Number
1996	61.9565200805664
1998	58.6956520080566
2000	56.5217399597168
2002	44.8648643493652
2003	52.972972869873
2004	52.7363166809082
2005	55.3921585083008
2006	54.4117660522461
2007	57.2815551757813
2008	54.8543701171875
2009	53.1100463867188
2010	52.6315803527832
2011	54.028434753418
2012	53.0805702209473
2013	53.0805702209473
2014	51.9230766296387
2015	51.4285697937012
2016	53.3333320617676
2017	59.523811340332
2018	58.5714302062988
2019	55.238094329834
2020	57.1428565979004
2021	52.8571434020996
2022	50