Year	Number
1996	21.3114757537842
1998	25.1366119384766
2000	26.2295074462891
2002	32.4324340820313
2003	29.1891899108887
2004	30.8457717895508
2005	33.3333320617676
2006	33.1707305908203
2007	40.7766990661621
2008	39.3203887939453
2009	37.3205757141113
2010	34.9282302856445
2011	42.1800956726074
2012	45.497631072998
2013	45.497631072998
2014	44.711540222168
2015	39.523811340332
2016	35.238094329834
2017	36.1904754638672
2018	38.5714302062988
2019	36.1904754638672
2020	33.8095245361328
2021	33.3333320617676
2022	38.2075462341309