Year	Number
1996	65.5
1998	67.164176940918
2000	67.164176940918
2002	69.1542282104492
2003	67.164176940918
2004	66.3461532592773
2005	64.9038467407227
2006	70.6730804443359
2007	71.1538467407227
2008	71.1538467407227
2009	68.7203826904297
2010	68.7203826904297
2011	68.0751190185547
2012	67.1361465454102
2013	70.4225387573242
2014	70.4433517456055
2015	71.9211807250977
2016	71.9211807250977
2017	72.9064025878906
2018	69.4174728393555
2019	70.5314025878906
2020	71.0144958496094
2021	67.6328506469727
2022	67.6328506469727