Year	Number
1996	58
1998	61.1940307617188
2000	62.6865653991699
2002	64.1791076660156
2003	61.6915435791016
2004	51.9230766296387
2005	41.8269233703613
2006	50.480770111084
2007	50.961540222168
2008	51.4423065185547
2009	52.1327018737793
2010	50.2369651794434
2011	50.2347412109375
2012	49.7652587890625
2013	49.7652587890625
2014	52.2167472839355
2015	53.2019691467285
2016	54.679801940918
2017	55.6650238037109
2018	55.3398056030273
2019	54.5893707275391
2020	54.1062812805176
2021	55.5555572509766
2022	55.0724639892578