Year	Number
1996	79.3969879150391
1998	73.5
2000	73.1343307495117
2002	79.1044769287109
2003	73.1343307495117
2004	75
2005	75.1196136474609
2006	79.9043045043945
2007	80.3827743530273
2008	80.288459777832
2009	71.5639801025391
2010	72.0379180908203
2011	71.8309860229492
2012	68.0751190185547
2013	67.6056365966797
2014	70.6730804443359
2015	65.2380981445313
2016	65.2380981445313
2017	69.0476226806641
2018	70.476188659668
2019	68.5714263916016
2020	66.1904754638672
2021	67.6190490722656
2022	63.2075462341309