Year	Number
1996	62.9032249450684
1998	60.9625663757324
2000	57.9787216186523
2002	56.0846557617188
2003	56.6137580871582
2004	55.6650238037109
2005	54.1463432312012
2006	55.1219520568848
2007	56.3106803894043
2008	62.6213607788086
2009	57.4162673950195
2010	54.761905670166
2011	55.4502372741699
2012	54.028434753418
2013	54.028434753418
2014	53.3653831481934
2015	51.4285697937012
2016	44.761905670166
2017	42.3809509277344
2018	41.4285697937012
2019	40
2020	43.8095245361328
2021	44.761905670166
2022	40.5660362243652