Year	Number
1996	34.5744667053223
1998	38.2978706359863
2000	32.2751312255859
2002	26.9841270446777
2003	25.6281414031982
2004	27.6699028015137
2005	28.1553401947021
2006	25.1207733154297
2007	25.6038646697998
2008	26.9230766296387
2009	26.0663509368896
2010	28.9099521636963
2011	37.9146919250488
2012	37.4407577514648
2013	36.4928894042969
2014	42.3809509277344
2015	43.3333320617676
2016	44.2857131958008
2017	40.9523811340332
2018	41.5094337463379
2019	33.9622650146484
2020	36.7924537658691
2021	41.5094337463379
2022	45.7547187805176