Year	Number
1996	63
1998	65.1741256713867
2000	59.7014923095703
2002	59.2039794921875
2003	59.2039794921875
2004	57.211540222168
2005	54.3269233703613
2006	54.8076934814453
2007	57.211540222168
2008	56.25
2009	53.0805702209473
2010	51.6587677001953
2011	51.6431922912598
2012	52.1126747131348
2013	53.521125793457
2014	56.6502456665039
2015	56.1576347351074
2016	56.6502456665039
2017	56.1576347351074
2018	56.3106803894043
2019	57.487922668457
2020	58.4541053771973
2021	57.487922668457
2022	56.038646697998