Year	Number
1996	61.4130439758301
1998	54.347827911377
2000	57.0652160644531
2002	57.2972984313965
2003	61.6216201782227
2004	56.7164192199707
2005	58.3333320617676
2006	54.4117660522461
2007	51.9417457580566
2008	53.3980598449707
2009	52.1531105041504
2010	50.7177047729492
2011	50.2369651794434
2012	45.0236968994141
2013	45.0236968994141
2014	41.8269233703613
2015	44.761905670166
2016	43.3333320617676
2017	39.0476188659668
2018	45.7142868041992
2019	49.0476188659668
2020	47.6190490722656
2021	45.238094329834
2022	41.0377349853516