Year	Number
1996	78.260871887207
1998	78.260871887207
2000	78.8043441772461
2002	81.0810775756836
2003	80.5405426025391
2004	79.1044769287109
2005	77.9411773681641
2006	80.3921585083008
2007	77.1844635009766
2008	79.1262130737305
2009	73.2057418823242
2010	74.6411514282227
2011	75.3554534912109
2012	73.459716796875
2013	72.0379180908203
2014	69.2307662963867
2015	67.1428604125977
2016	66.1904754638672
2017	69.523811340332
2018	62.8571434020996
2019	63.8095245361328
2020	62.8571434020996
2021	60
2022	58.0188674926758