Year	Number
1996	72.1311492919922
1998	69.3989105224609
2000	65.0273208618164
2002	65.405403137207
2003	60.5405387878418
2004	46.766170501709
2005	59.3137245178223
2006	63.4146347045898
2007	65.0485458374023
2008	66.5048522949219
2009	68.4210510253906
2010	67.464111328125
2011	67.7725143432617
2012	65.8767776489258
2013	67.2985763549805
2014	72.5961532592773
2015	71.4285736083984
2016	72.3809509277344
2017	73.8095245361328
2018	76.1904754638672
2019	77.6190490722656
2020	77.6190490722656
2021	77.1428604125977
2022	77.3584899902344