Year	Number
1996	22.8260860443115
1998	20.6521739959717
2000	26.0869560241699
2002	37.8378372192383
2003	48.6486473083496
2004	44.2786064147949
2005	50.4901962280273
2006	40.1960792541504
2007	41.262134552002
2008	47.5728149414063
2009	48.3253593444824
2010	46.8899536132813
2011	40.7582931518555
2012	42.6540298461914
2013	43.6018943786621
2014	37.980770111084
2015	41.4285697937012
2016	42.8571434020996
2017	38.5714302062988
2018	35.238094329834
2019	35.238094329834
2020	46.6666679382324
2021	50.9523811340332
2022	53.301887512207