Year	Number
2008	45.1456298828125
2009	42.1052627563477
2010	38.0952377319336
2011	36.4928894042969
2012	41.7061614990234
2013	30.8056869506836
2014	37.980770111084
2015	67.1428604125977
2016	70
2017	68.5714263916016
2018	68.0952377319336
2019	68.5714263916016
2020	70.476188659668
2021	71.4285736083984
2022	71.698112487793