Year	Number
1996	46.2765960693359
1998	42.5531921386719
2000	40.7407417297363
2002	39.1534385681152
2003	37.6884422302246
2004	43.6893196105957
2005	47.5728149414063
2006	46.3768119812012
2007	48.7922706604004
2008	44.711540222168
2009	44.5497627258301
2010	43.1279602050781
2011	48.3412322998047
2012	41.2322273254395
2013	42.6540298461914
2014	36.6666679382324
2015	40.476188659668
2016	38.5714302062988
2017	48.5714302062988
2018	56.6037750244141
2019	54.7169799804688
2020	55.6603775024414
2021	55.1886787414551
2022	51.886791229248