Year	Number
1996	33.5
1998	30.348258972168
2000	54.7263679504395
2002	57.2139320373535
2003	61.1940307617188
2004	62.019229888916
2005	57.6923065185547
2006	54.8076934814453
2007	56.25
2008	55.769229888916
2009	55.9241714477539
2010	55.4502372741699
2011	56.3380279541016
2012	58.6854476928711
2013	57.7464790344238
2014	58.1280784606934
2015	58.6206893920898
2016	56.1576347351074
2017	56.6502456665039
2018	56.7961158752441
2019	56.038646697998
2020	58.937198638916
2021	59.4202880859375
2022	60.386474609375