Year	Number
2004	45.7711448669434
2005	19.6078433990479
2006	16.6666660308838
2007	15.5339803695679
2008	11.1650485992432
2009	9.56937789916992
2010	7.17703342437744
2011	6.63507127761841
2012	8.53080558776855
2013	8.05687236785889
2014	17.3076915740967
2015	20.4761905670166
2016	21.4285717010498
2017	21.4285717010498
2018	28.5714282989502
2019	34.2857131958008
2020	37.1428565979004
2021	39.0476188659668
2022	42.9245300292969