Year	Number
1996	36.9565200805664
1998	32.0652160644531
2000	31.5217399597168
2002	37.8378372192383
2003	44.8648643493652
2004	37.3134346008301
2005	43.6274528503418
2006	50.4901962280273
2007	47.0873794555664
2008	47.5728149414063
2009	41.1483268737793
2010	36.8421058654785
2011	31.2796211242676
2012	31.2796211242676
2013	30.3317527770996
2014	28.365385055542
2015	27.1428565979004
2016	23.3333339691162
2017	27.619047164917
2018	18.5714282989502
2019	26.1904754638672
2020	30
2021	24.761905670166
2022	21.698112487793