Year	Number
1996	26.3440856933594
1998	30.4812831878662
2000	30.319149017334
2002	27.5132274627686
2003	19.5767192840576
2004	21.674877166748
2005	13.6585369110107
2006	16.5853652954102
2007	19.4174766540527
2008	16.990291595459
2009	18.6602878570557
2010	23.3333339691162
2011	20.8530807495117
2012	17.5355453491211
2013	19.9052124023438
2014	15.865385055542
2015	22.8571434020996
2016	20.9523811340332
2017	32.8571434020996
2018	35.7142868041992
2019	36.1904754638672
2020	39.523811340332
2021	36.1904754638672
2022	32.5471687316895