Year	Number
1996	60.1063842773438
1998	76.0638275146484
2000	68.2539672851563
2002	51.8518524169922
2003	45.7286415100098
2004	50.970874786377
2005	42.2330093383789
2006	42.9951705932617
2007	39.613525390625
2008	38.461540222168
2009	44.5497627258301
2010	46.445499420166
2011	47.8672981262207
2012	40.7582931518555
2013	41.7061614990234
2014	40.9523811340332
2015	45.238094329834
2016	47.6190490722656
2017	45.7142868041992
2018	46.2264137268066
2019	48.113208770752
2020	48.113208770752
2021	46.2264137268066
2022	48.5849075317383