Year	Number
1996	19.3548393249512
1998	25.6684494018555
2000	20.7446804046631
2002	30.1587295532227
2003	35.4497337341309
2004	21.674877166748
2005	16.0975608825684
2006	16.0975608825684
2007	16.019416809082
2008	15.5339803695679
2009	21.0526313781738
2010	20
2011	22.274881362915
2012	18.4834117889404
2013	16.1137447357178
2014	15.384614944458
2015	13.3333330154419
2016	11.9047622680664
2017	17.619047164917
2018	26.1904754638672
2019	28.0952377319336
2020	27.1428565979004
2021	29.5238094329834
2022	34.4339637756348