Year	Number
1996	41
1998	46.2686576843262
2000	45.7711448669434
2002	45.7711448669434
2003	44.7761192321777
2004	44.230770111084
2005	43.75
2006	36.538459777832
2007	34.1346168518066
2008	32.6923065185547
2009	32.2274894714355
2010	31.2796211242676
2011	30.5164318084717
2012	29.577465057373
2013	28.6384983062744
2014	28.0788173675537
2015	36.4532012939453
2016	43.3497543334961
2017	43.3497543334961
2018	46.1165046691895
2019	42.512077331543
2020	43.961353302002
2021	44.4444427490234
2022	40.0966186523438