Year	Number
1996	51.5957450866699
1998	60.638298034668
2000	57.1428565979004
2002	57.6719589233398
2003	46.2311553955078
2004	48.5436897277832
2005	41.262134552002
2006	42.9951705932617
2007	41.5458946228027
2008	40.3846168518066
2009	47.3933639526367
2010	41.7061614990234
2011	45.971565246582
2012	39.8104248046875
2013	41.2322273254395
2014	54.2857131958008
2015	59.0476188659668
2016	59.523811340332
2017	60
2018	55.6603775024414
2019	57.5471687316895
2020	54.7169799804688
2021	56.1320762634277
2022	54.7169799804688