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	51.9047622680664
2015	58.5714302062988
2016	58.5714302062988
2017	70.476188659668
2018	69.3396224975586
2019	66.9811325073242
2020	66.0377349853516
2021	65.0943374633789
2022	68.8679275512695