Year	Number
1996	67.7419357299805
1998	74.8663101196289
2000	76.0638275146484
2002	80.9523773193359
2003	73.5449752807617
2004	73.3990173339844
2005	67.3170700073242
2006	67.3170700073242
2007	68.9320373535156
2008	72.3300933837891
2009	67.464111328125
2010	67.1428604125977
2011	62.0853080749512
2012	62.5592422485352
2013	62.0853080749512
2014	63.9423065185547
2015	61.9047622680664
2016	63.8095245361328
2017	61.4285697937012
2018	60.476188659668
2019	65.7142868041992
2020	60
2021	58.0952377319336
2022	57.5471687316895