Year	Number
1996	62.3115577697754
1998	58.5
2000	58.7064666748047
2002	60.1990051269531
2003	61.1940307617188
2004	59.6153831481934
2005	57.8947372436523
2006	52.6315803527832
2007	54.0669860839844
2008	57.6923065185547
2009	59.2417068481445
2010	56.3981056213379
2011	48.3568077087402
2012	46.0093879699707
2013	39.9061050415039
2014	37.980770111084
2015	43.3333320617676
2016	47.6190490722656
2017	47.1428565979004
2018	51.9047622680664
2019	50.9523811340332
2020	51.9047622680664
2021	52.3809509277344
2022	53.7735862731934