Year	Number
1996	51.0869560241699
1998	45.1086959838867
2000	58.152172088623
2002	55.1351356506348
2003	52.4324340820313
2004	51.7412948608398
2005	53.4313735961914
2006	55.3921585083008
2007	60.1941757202148
2008	59.7087364196777
2009	55.0239219665527
2010	55.5023918151855
2011	60.1895751953125
2012	61.6113739013672
2013	63.0331764221191
2014	66.8269195556641
2015	66.1904754638672
2016	65.7142868041992
2017	63.8095245361328
2018	62.3809509277344
2019	63.8095245361328
2020	59.0476188659668
2021	60
2022	56.6037750244141