Year	Number
2003	52.7638206481934
2004	51.9417457580566
2005	47.5728149414063
2006	45.4106292724609
2007	42.9951705932617
2008	41.3461532592773
2009	61.6113739013672
2010	67.2985763549805
2011	48.8151664733887
2012	43.1279602050781
2013	48.8151664733887
2014	36.6666679382324
2015	65.7142868041992
2016	65.7142868041992
2017	62.3809509277344
2018	63.2075462341309
2019	58.0188674926758
2020	56.6037750244141
2021	55.6603775024414
2022	58.9622650146484