Year	Number
1996	62.5
1998	63.1840782165527
2000	65.6716384887695
2002	63.1840782165527
2003	57.2139320373535
2004	58.1730766296387
2005	56.25
2006	58.6538467407227
2007	58.1730766296387
2008	58.1730766296387
2009	56.8720397949219
2010	55.9241714477539
2011	56.3380279541016
2012	57.7464790344238
2013	57.2769966125488
2014	59.6059112548828
2015	58.6206893920898
2016	58.1280784606934
2017	57.6354675292969
2018	57.7669906616211
2019	59.9033813476563
2020	59.4202880859375
2021	61.835750579834
2022	61.3526573181152