Year	Number
1996	52.7638206481934
1998	53
2000	51.7412948608398
2002	57.7114410400391
2003	56.2189064025879
2004	59.6153831481934
2005	57.8947372436523
2006	61.7224884033203
2007	59.3301429748535
2008	58.6538467407227
2009	62.0853080749512
2010	61.6113739013672
2011	57.2769966125488
2012	57.2769966125488
2013	55.3990592956543
2014	62.5
2015	61.4285697937012
2016	60.9523811340332
2017	62.8571434020996
2018	61.9047622680664
2019	61.4285697937012
2020	63.8095245361328
2021	60.476188659668
2022	56.6037750244141