Year	Number
1996	14
1998	19.4029846191406
2000	30.348258972168
2002	48.756217956543
2003	44.2786064147949
2004	43.269229888916
2005	43.269229888916
2006	54.3269233703613
2007	56.730770111084
2008	56.730770111084
2009	57.3459701538086
2010	55.9241714477539
2011	56.3380279541016
2012	56.3380279541016
2013	57.2769966125488
2014	55.6650238037109
2015	55.1724128723145
2016	53.694580078125
2017	49.7536964416504
2018	45.1456298828125
2019	43.961353302002
2020	40.5797119140625
2021	41.062801361084
2022	42.512077331543