Year	Number
1996	57.0652160644531
1998	53.8043479919434
2000	55.4347839355469
2002	54.5945930480957
2003	55.1351356506348
2004	53.7313423156738
2005	52.4509811401367
2006	53.4313735961914
2007	51.9417457580566
2008	45.6310691833496
2009	45.4545440673828
2010	43.0622024536133
2011	40.7582931518555
2012	39.3364944458008
2013	44.5497627258301
2014	47.5961532592773
2015	50.9523811340332
2016	48.0952377319336
2017	50
2018	47.6190490722656
2019	43.3333320617676
2020	43.8095245361328
2021	45.238094329834
2022	41.9811325073242