Year	Number
1996	54
1998	49.2537307739258
2000	54.7263679504395
2002	59.7014923095703
2003	56.7164192199707
2004	56.25
2005	53.3653831481934
2006	48.5576934814453
2007	40.8653831481934
2008	40.8653831481934
2009	38.8625602722168
2010	37.4407577514648
2011	40.3755874633789
2012	49.2957763671875
2013	51.6431922912598
2014	58.1280784606934
2015	57.6354675292969
2016	57.6354675292969
2017	57.1428565979004
2018	54.8543701171875
2019	54.1062812805176
2020	55.0724639892578
2021	54.5893707275391
2022	54.1062812805176