Year	Number
1996	62
1998	46.766170501709
2000	51.7412948608398
2002	54.2288551330566
2003	62.6865653991699
2004	65.3846130371094
2005	67.3076934814453
2006	61.538459777832
2007	60.0961532592773
2008	59.1346168518066
2009	60.6635055541992
2010	63.5071105957031
2011	65.7276992797852
2012	66.6666641235352
2013	69.9530487060547
2014	65.5172424316406
2015	64.5320205688477
2016	58.1280784606934
2017	59.6059112548828
2018	61.1650466918945
2019	51.2077293395996
2020	46.8599052429199
2021	37.1980667114258
2022	35.2657012939453