Year	Number
1996	39.5
1998	43.2835807800293
2000	30.8457717895508
2002	33.3333320617676
2003	30.8457717895508
2004	28.365385055542
2005	39.4230766296387
2006	47.5961532592773
2007	49.519229888916
2008	50.480770111084
2009	50.2369651794434
2010	45.0236968994141
2011	44.6009407043457
2012	40.3755874633789
2013	37.5586853027344
2014	43.3497543334961
2015	43.8423652648926
2016	47.7832527160645
2017	47.290641784668
2018	43.6893196105957
2019	46.8599052429199
2020	51.6908226013184
2021	49.2753639221191
2022	45.8937187194824