Year	Number
1998	50.2673797607422
2000	18.6170215606689
2002	11.640212059021
2003	20.6349201202393
2004	19.2118225097656
2005	25.8536586761475
2006	24.8780479431152
2007	27.6699028015137
2008	36.8932037353516
2009	36.8421058654785
2010	37.6190490722656
2011	38.8625602722168
2012	43.1279602050781
2013	35.0710906982422
2014	43.269229888916
2015	42.8571434020996
2016	42.3809509277344
2017	42.8571434020996
2018	45.238094329834
2019	43.3333320617676
2020	44.2857131958008
2021	41.9047622680664
2022	37.2641525268555