Year	Number
1996	52.1505393981934
1998	52.4064178466797
2000	53.7234039306641
2002	64.5502624511719
2003	53.9682540893555
2004	56.1576347351074
2005	55.6097564697266
2006	41.4634132385254
2007	36.4077682495117
2008	37.3786392211914
2009	37.3205757141113
2010	30.4761905670166
2011	37.9146919250488
2012	49.2891006469727
2013	53.0805702209473
2014	58.6538467407227
2015	57.6190490722656
2016	56.1904754638672
2017	52.8571434020996
2018	55.238094329834
2019	55.7142868041992
2020	55.7142868041992
2021	57.1428565979004
2022	53.7735862731934