Year	Number
1996	57.4468078613281
1998	48.4042549133301
2000	50.7936515808105
2002	57.6719589233398
2003	51.2562828063965
2004	48.5436897277832
2005	45.6310691833496
2006	42.9951705932617
2007	50.7246360778809
2008	57.6923065185547
2009	57.3459701538086
2010	52.1327018737793
2011	50.2369651794434
2012	53.554500579834
2013	62.5592422485352
2014	74.2857131958008
2015	67.1428604125977
2016	69.0476226806641
2017	70.476188659668
2018	69.3396224975586
2019	60.8490562438965
2020	60.8490562438965
2021	63.6792449951172
2022	60.8490562438965