Year	Number
1996	55.1912574768066
1998	60.1092910766602
2000	68.3060073852539
2002	64.3243255615234
2003	67.0270233154297
2004	65.6716384887695
2005	60.294116973877
2006	58.5365867614746
2007	61.1650466918945
2008	60.6796112060547
2009	64.5932998657227
2010	65.5502395629883
2011	65.4028472900391
2012	68.2464447021484
2013	66.3507080078125
2014	66.3461532592773
2015	63.8095245361328
2016	64.7619018554688
2017	62.3809509277344
2018	60.476188659668
2019	55.7142868041992
2020	59.0476188659668
2021	57.6190490722656
2022	52.3584899902344