Year	Number
1996	44.680850982666
1998	35.1063842773438
2000	40.2116394042969
2002	42.3280410766602
2003	35.1758804321289
2004	34.4660186767578
2005	47.5728149414063
2006	45.4106292724609
2007	38.6473426818848
2008	36.0576934814453
2009	40.7582931518555
2010	36.0189590454102
2011	39.3364944458008
2012	41.2322273254395
2013	41.7061614990234
2014	30.9523811340332
2015	36.6666679382324
2016	41.9047622680664
2017	40
2018	35.3773574829102
2019	33.9622650146484
2020	33.0188674926758
2021	28.7735843658447
2022	30.6603775024414