Year	Number
2007	31.5533981323242
2008	40.7766990661621
2009	42.1052627563477
2010	35.8851661682129
2011	33.1753540039063
2012	34.5971565246582
2013	34.1232223510742
2014	29.8076915740967
2015	49.0476188659668
2016	49.0476188659668
2017	51.4285697937012
2018	63.8095245361328
2019	52.3809509277344
2020	57.6190490722656
2021	56.6666679382324
2022	60.3773574829102