Year	Number
2004	52.709358215332
2005	50.7317085266113
2006	39.5121955871582
2007	44.1747589111328
2008	37.3786392211914
2009	28.7081336975098
2010	34.2857131958008
2011	42.6540298461914
2012	39.3364944458008
2013	36.9668235778809
2014	51.9230766296387
2015	50
2016	50
2017	53.3333320617676
2018	52.3809509277344
2019	50.9523811340332
2020	54.761905670166
2021	48.0952377319336
2022	44.8113212585449