Year	Number
1996	83.606559753418
1998	81.420768737793
2000	80.3278656005859
2002	76.7567596435547
2003	75.6756744384766
2004	78.1094512939453
2005	72.0588226318359
2006	73.1707305908203
2007	77.1844635009766
2008	73.7864074707031
2009	74.6411514282227
2010	75.1196136474609
2011	75.3554534912109
2012	75.3554534912109
2013	75.8293838500977
2014	75.961540222168
2015	75.7142868041992
2016	71.9047622680664
2017	70.476188659668
2018	71.4285736083984
2019	72.8571395874023
2020	75.7142868041992
2021	80.9523773193359
2022	80.1886825561523