Year	Number
1996	64.5
1998	66.1691513061523
2000	67.164176940918
2002	70.6467666625977
2003	68.1592025756836
2004	67.3076934814453
2005	66.8269195556641
2006	73.0769195556641
2007	71.6346130371094
2008	72.1153869628906
2009	72.9857788085938
2010	75.3554534912109
2011	74.6478881835938
2012	73.7089233398438
2013	73.2394332885742
2014	72.9064025878906
2015	74.8768463134766
2016	75.8620681762695
2017	76.8472900390625
2018	79.1262130737305
2019	80.1932373046875
2020	84.0579681396484
2021	82.6086959838867
2022	81.6425094604492