Year	Number
2009	71.7703323364258
2010	71.9047622680664
2011	71.5639801025391
2012	70.1421813964844
2013	70.6161117553711
2014	69.711540222168
2015	68.0952377319336
2016	66.1904754638672
2017	70
2018	71.9047622680664
2019	68.5714263916016
2020	65.2380981445313
2021	62.8571434020996
2022	63.6792449951172