Year	Number
1996	40
1998	44.7761192321777
2000	45.7711448669434
2002	45.2736320495605
2003	42.7860679626465
2004	39.9038467407227
2005	44.711540222168
2006	46.1538467407227
2007	47.5961532592773
2008	49.038459777832
2009	48.8151664733887
2010	48.8151664733887
2011	50.2347412109375
2012	49.7652587890625
2013	46.948356628418
2014	48.7684745788574
2015	46.305419921875
2016	45.8128089904785
2017	42.8571434020996
2018	38.3495140075684
2019	34.7826080322266
2020	32.8502426147461
2021	33.3333320617676
2022	34.2995185852051