Year	Number
1996	32.1608047485352
1998	42
2000	42.7860679626465
2002	37.8109436035156
2003	42.7860679626465
2004	42.788459777832
2005	33.9712905883789
2006	27.2727279663086
2007	26.3157901763916
2008	26.9230766296387
2009	26.5402851104736
2010	26.5402851104736
2011	28.1690139770508
2012	30.9859161376953
2013	26.2910804748535
2014	24.0384616851807
2015	29.0476188659668
2016	36.1904754638672
2017	37.6190490722656
2018	35.238094329834
2019	32.8571434020996
2020	29.0476188659668
2021	24.761905670166
2022	24.056604385376