Year	Number
1996	32.6633148193359
1998	36
2000	37.3134346008301
2002	35.3233833312988
2003	39.3034820556641
2004	35.5769233703613
2005	34.4497604370117
2006	33.4928245544434
2007	32.5358848571777
2008	34.1346168518066
2009	41.7061614990234
2010	44.0758285522461
2011	46.0093879699707
2012	44.6009407043457
2013	45.0704231262207
2014	37.980770111084
2015	35.7142868041992
2016	31.9047622680664
2017	32.8571434020996
2018	39.523811340332
2019	40
2020	38.5714302062988
2021	38.0952377319336
2022	38.2075462341309