Year	Number
1996	63.3165817260742
1998	64
2000	58.2089538574219
2002	48.756217956543
2003	45.7711448669434
2004	39.9038467407227
2005	34.4497604370117
2006	45.9330139160156
2007	46.8899536132813
2008	42.3076934814453
2009	31.2796211242676
2010	28.4360198974609
2011	30.046947479248
2012	40.3755874633789
2013	40.3755874633789
2014	40.3846168518066
2015	39.0476188659668
2016	31.9047622680664
2017	36.6666679382324
2018	44.761905670166
2019	44.2857131958008
2020	44.761905670166
2021	45.7142868041992
2022	45.7547187805176