Year	Number
1996	22.1105518341064
1998	26
2000	23.8805961608887
2002	20.8955230712891
2003	25.3731346130371
2004	21.634614944458
2005	30.6220092773438
2006	23.4449768066406
2007	23.9234447479248
2008	27.884614944458
2009	37.4407577514648
2010	38.3886260986328
2011	42.2535209655762
2012	34.7417831420898
2013	39.9061050415039
2014	41.8269233703613
2015	44.761905670166
2016	45.238094329834
2017	45.238094329834
2018	44.2857131958008
2019	44.2857131958008
2020	45.238094329834
2021	42.8571434020996
2022	43.8679237365723