Year	Number
1996	61.7486343383789
1998	64.4808731079102
2000	61.2021865844727
2002	56.7567558288574
2003	54.5945930480957
2004	54.2288551330566
2005	56.3725471496582
2006	57.5609741210938
2007	56.7961158752441
2008	57.7669906616211
2009	58.8516731262207
2010	59.8086128234863
2011	60.1895751953125
2012	63.5071105957031
2013	63.5071105957031
2014	63.461540222168
2015	64.7619018554688
2016	60
2017	54.761905670166
2018	52.3809509277344
2019	57.6190490722656
2020	58.0952377319336
2021	57.1428565979004
2022	47.6415100097656