Year	Number
1996	50
1998	45.652172088623
2000	41.847827911377
2002	42.7027015686035
2003	45.4054069519043
2004	44.2786064147949
2005	47.5490188598633
2006	41.1764717102051
2007	37.8640785217285
2008	43.6893196105957
2009	41.1483268737793
2010	41.1483268737793
2011	43.6018943786621
2012	50.2369651794434
2013	51.1848335266113
2014	44.711540222168
2015	45.238094329834
2016	45.7142868041992
2017	44.2857131958008
2018	46.1904754638672
2019	46.1904754638672
2020	41.4285697937012
2021	40.9523811340332
2022	41.0377349853516