Year	Number
1996	47.3404273986816
1998	42.5531921386719
2000	19.0476188659668
2002	46.0317459106445
2003	39.1959800720215
2004	30.5825233459473
2005	35.9223289489746
2006	38.164249420166
2007	37.6811599731445
2008	37.5
2009	42.6540298461914
2010	40.7582931518555
2011	39.3364944458008
2012	37.9146919250488
2013	38.8625602722168
2014	36.6666679382324
2015	40.9523811340332
2016	44.2857131958008
2017	33.8095245361328
2018	35.3773574829102
2019	54.2452812194824
2020	51.886791229248
2021	52.3584899902344
2022	50.4716987609863