Year	Number
1996	58.4699440002441
1998	57.9234962463379
2000	63.9344253540039
2002	63.7837829589844
2003	62.7027015686035
2004	67.6616897583008
2005	67.6470565795898
2006	69.2682952880859
2007	67.9611663818359
2008	70.8737869262695
2009	69.8564605712891
2010	69.3779907226563
2011	68.7203826904297
2012	71.5639801025391
2013	71.0900497436523
2014	73.0769195556641
2015	70
2016	68.0952377319336
2017	70.9523773193359
2018	70.9523773193359
2019	69.0476226806641
2020	68.0952377319336
2021	69.523811340332
2022	70.2830200195313