Year	Number
1996	62.3115577697754
1998	64
2000	62.6865653991699
2002	60.1990051269531
2003	62.6865653991699
2004	58.6538467407227
2005	57.8947372436523
2006	55.9808616638184
2007	56.4593315124512
2008	57.6923065185547
2009	59.2417068481445
2010	61.1374397277832
2011	61.5023460388184
2012	60.0938949584961
2013	59.6244125366211
2014	62.5
2015	58.5714302062988
2016	58.0952377319336
2017	58.0952377319336
2018	59.0476188659668
2019	59.0476188659668
2020	55.238094329834
2021	55.7142868041992
2022	56.6037750244141