Year	Number
1996	43.7185935974121
1998	37.5
2000	52.2388076782227
2002	54.7263679504395
2003	52.2388076782227
2004	48.5576934814453
2005	48.8038291931152
2006	55.0239219665527
2007	55.0239219665527
2008	53.3653831481934
2009	53.554500579834
2010	54.028434753418
2011	54.4600944519043
2012	55.8685455322266
2013	57.2769966125488
2014	61.0576934814453
2015	59.523811340332
2016	55.238094329834
2017	57.6190490722656
2018	55.238094329834
2019	53.3333320617676
2020	51.9047622680664
2021	50.476188659668
2022	51.4150924682617