Year	Number
1996	59.5628433227539
1998	54.6448097229004
2000	53.0054626464844
2002	51.8918914794922
2003	54.5945930480957
2004	49.7512435913086
2005	48.0392150878906
2006	50.7317085266113
2007	50.970874786377
2008	53.8834953308105
2009	51.1961708068848
2010	47.3684196472168
2011	46.9194297790527
2012	51.6587677001953
2013	53.0805702209473
2014	48.5576934814453
2015	51.4285697937012
2016	48.0952377319336
2017	48.5714302062988
2018	44.761905670166
2019	39.523811340332
2020	39.0476188659668
2021	37.6190490722656
2022	37.7358474731445