Year	Number
1996	59.2964820861816
1998	55.5
2000	53.7313423156738
2002	51.7412948608398
2003	49.2537307739258
2004	50.961540222168
2005	44.9760780334473
2006	45.4545440673828
2007	46.4114837646484
2008	41.8269233703613
2009	46.9194297790527
2010	47.8672981262207
2011	46.948356628418
2012	46.478874206543
2013	44.6009407043457
2014	52.4038467407227
2015	50.9523811340332
2016	44.2857131958008
2017	44.2857131958008
2018	44.761905670166
2019	45.7142868041992
2020	47.1428565979004
2021	45.7142868041992
2022	44.8113212585449