Year	Number
1996	47
1998	48.756217956543
2000	48.756217956543
2002	46.2686576843262
2003	55.2238807678223
2004	55.769229888916
2005	58.1730766296387
2006	53.3653831481934
2007	52.8846168518066
2008	49.038459777832
2009	48.3412322998047
2010	45.497631072998
2011	42.7230033874512
2012	45.0704231262207
2013	43.6619720458984
2014	46.305419921875
2015	43.3497543334961
2016	41.8719215393066
2017	38.9162559509277
2018	36.8932037353516
2019	37.6811599731445
2020	36.7149772644043
2021	36.2318840026855
2022	37.6811599731445