Year	Number
1996	43.7158470153809
1998	51.3661193847656
2000	53.0054626464844
2002	42.7027015686035
2003	37.8378372192383
2004	37.8109436035156
2005	23.529411315918
2006	33.1707305908203
2007	36.8932037353516
2008	37.8640785217285
2009	34.4497604370117
2010	36.3636360168457
2011	40.7582931518555
2012	39.3364944458008
2013	41.7061614990234
2014	51.9230766296387
2015	46.1904754638672
2016	49.0476188659668
2017	50.476188659668
2018	38.5714302062988
2019	36.1904754638672
2020	39.0476188659668
2021	43.8095245361328
2022	44.3396224975586