Year	Number
1996	62.2950820922852
1998	67.7595596313477
2000	59.5628433227539
2002	52.972972869873
2003	47.5675659179688
2004	46.766170501709
2005	41.6666679382324
2006	39.5121955871582
2007	46.6019401550293
2008	53.8834953308105
2009	50.2392349243164
2010	59.3301429748535
2011	59.7156410217285
2012	60.1895751953125
2013	60.1895751953125
2014	55.769229888916
2015	51.4285697937012
2016	55.7142868041992
2017	57.6190490722656
2018	51.9047622680664
2019	61.4285697937012
2020	54.2857131958008
2021	55.7142868041992
2022	53.301887512207