Year	Number
1996	27.1276588439941
1998	18.6170215606689
2000	35.4497337341309
2002	20.1058197021484
2003	27.6381912231445
2004	23.7864074707031
2005	25.7281551361084
2006	30.4347820281982
2007	33.8164253234863
2008	35.0961532592773
2009	50.7108993530273
2010	50.2369651794434
2011	48.8151664733887
2012	40.7582931518555
2013	42.6540298461914
2014	44.2857131958008
2015	40.476188659668
2016	39.0476188659668
2017	39.523811340332
2018	48.113208770752
2019	50.9433975219727
2020	52.8301887512207
2021	50.9433975219727
2022	56.6037750244141