Year	Number
1996	64.1304321289063
1998	64.1304321289063
2000	63.5869560241699
2002	60.5405387878418
2003	55.6756744384766
2004	52.7363166809082
2005	56.8627433776855
2006	54.4117660522461
2007	53.3980598449707
2008	53.8834953308105
2009	57.4162673950195
2010	60.7655487060547
2011	60.6635055541992
2012	60.1895751953125
2013	64.4549789428711
2014	65.3846130371094
2015	62.3809509277344
2016	65.7142868041992
2017	64.7619018554688
2018	62.8571434020996
2019	62.8571434020996
2020	61.9047622680664
2021	63.8095245361328
2022	62.7358474731445