Year	Number
1996	9.04522609710693
1998	9.5
2000	40.7960205078125
2002	42.7860679626465
2003	42.7860679626465
2004	42.3076934814453
2005	40.1913871765137
2006	46.8899536132813
2007	48.3253593444824
2008	49.038459777832
2009	32.7014236450195
2010	39.3364944458008
2011	46.0093879699707
2012	42.7230033874512
2013	46.0093879699707
2014	23.5576915740967
2015	37.6190490722656
2016	36.1904754638672
2017	45.238094329834
2018	40
2019	50.9523811340332
2020	53.8095245361328
2021	56.1904754638672
2022	56.6037750244141