Year	Number
1996	62
1998	63.1840782165527
2000	56.7164192199707
2002	55.2238807678223
2003	57.7114410400391
2004	58.1730766296387
2005	59.1346168518066
2006	57.211540222168
2007	55.769229888916
2008	56.25
2009	56.3981056213379
2010	55.4502372741699
2011	55.8685455322266
2012	56.8075103759766
2013	56.3380279541016
2014	55.6650238037109
2015	55.1724128723145
2016	56.1576347351074
2017	56.6502456665039
2018	57.7669906616211
2019	59.9033813476563
2020	59.4202880859375
2021	59.4202880859375
2022	59.9033813476563