Year	Number
1996	61
1998	56.7164192199707
2000	58.2089538574219
2002	62.6865653991699
2003	62.6865653991699
2004	62.980770111084
2005	63.9423065185547
2006	59.6153831481934
2007	60.0961532592773
2008	58.6538467407227
2009	61.1374397277832
2010	63.9810409545898
2011	63.8497657775879
2012	63.8497657775879
2013	63.8497657775879
2014	61.5763549804688
2015	60.0985221862793
2016	61.0837440490723
2017	65.5172424316406
2018	67.9611663818359
2019	64.7342987060547
2020	65.7004852294922
2021	68.5990371704102
2022	67.1497573852539