Year	Number
1996	63.2978706359863
1998	57.9787216186523
2000	62.962963104248
2002	58.201057434082
2003	48.7437171936035
2004	50.4854354858398
2005	62.1359214782715
2006	57.9710159301758
2007	52.1739120483398
2008	49.519229888916
2009	53.0805702209473
2010	51.6587677001953
2011	54.028434753418
2012	55.9241714477539
2013	56.8720397949219
2014	44.2857131958008
2015	50
2016	54.2857131958008
2017	54.761905670166
2018	48.5849075317383
2019	49.0566024780273
2020	47.1698112487793
2021	42.9245300292969
2022	45.7547187805176