Year	Number
1996	24
1998	25.3731346130371
2000	30.348258972168
2002	24.3781089782715
2003	34.825870513916
2004	36.538459777832
2005	35.5769233703613
2006	36.538459777832
2007	33.6538467407227
2008	32.211540222168
2009	34.1232223510742
2010	34.5971565246582
2011	34.2723007202148
2012	42.7230033874512
2013	46.478874206543
2014	49.7536964416504
2015	49.2610855102539
2016	49.2610855102539
2017	47.7832527160645
2018	47.0873794555664
2019	43.961353302002
2020	40.0966186523438
2021	38.6473426818848
2022	39.613525390625