Year	Number
1996	42.0212783813477
1998	38.8297882080078
2000	35.4497337341309
2002	26.4550266265869
2003	30.1507530212402
2004	26.2135925292969
2005	25.7281551361084
2006	26.0869560241699
2007	37.6811599731445
2008	48.0769233703613
2009	48.8151664733887
2010	51.6587677001953
2011	41.2322273254395
2012	36.9668235778809
2013	45.497631072998
2014	36.6666679382324
2015	32.3809509277344
2016	28.0952377319336
2017	30
2018	33.4905662536621
2019	33.9622650146484
2020	27.8301887512207
2021	29.7169818878174
2022	25.4716987609863