Year	Number
1996	66
1998	68.6567153930664
2000	69.1542282104492
2002	70.6467666625977
2003	71.1442794799805
2004	65.8653869628906
2005	64.4230804443359
2006	70.6730804443359
2007	71.6346130371094
2008	72.1153869628906
2009	71.0900497436523
2010	71.5639801025391
2011	71.3615036010742
2012	70.4225387573242
2013	70.8920211791992
2014	73.3990173339844
2015	72.4137954711914
2016	72.4137954711914
2017	71.4285736083984
2018	64.5631103515625
2019	70.0483093261719
2020	69.0821228027344
2021	69.0821228027344
2022	68.1159439086914