Year	Number
1996	78.5
1998	76.6169128417969
2000	80.5970153808594
2002	84.0796051025391
2003	78.6069641113281
2004	79.8076934814453
2005	79.8076934814453
2006	82.211540222168
2007	83.6538467407227
2008	84.6153869628906
2009	82.4644546508789
2010	79.1469192504883
2011	80.7511749267578
2012	79.3427200317383
2013	77.4647903442383
2014	78.3251266479492
2015	80.7881774902344
2016	82.7586212158203
2017	83.2512283325195
2018	80.5825271606445
2019	81.159423828125
2020	75.3623199462891
2021	73.4299545288086
2022	73.9130401611328