Year	Number
1996	62.5
1998	63.1840782165527
2000	63.6815910339355
2002	63.1840782165527
2003	64.1791076660156
2004	56.730770111084
2005	70.6730804443359
2006	68.75
2007	67.788459777832
2008	68.2692337036133
2009	68.2464447021484
2010	69.6682434082031
2011	67.1361465454102
2012	66.1971817016602
2013	66.6666641235352
2014	70.4433517456055
2015	68.4729080200195
2016	67.4876861572266
2017	66.5024642944336
2018	61.1650466918945
2019	64.7342987060547
2020	63.7681159973145
2021	61.3526573181152
2022	60.8695640563965