Year	Number
1996	17.9347820281982
1998	15.7608699798584
2000	15.2173910140991
2002	21.6216220855713
2003	37.2972984313965
2004	38.8059692382813
2005	36.2745094299316
2006	28.9215679168701
2007	24.2718448638916
2008	26.6990299224854
2009	35.8851661682129
2010	42.1052627563477
2011	35.5450248718262
2012	34.1232223510742
2013	37.4407577514648
2014	28.365385055542
2015	27.1428565979004
2016	23.8095245361328
2017	26.6666660308838
2018	22.8571434020996
2019	16.6666660308838
2020	10.9523811340332
2021	9.0476188659668
2022	4.71698093414307