Year	Number
1996	83.5
1998	86.5671615600586
2000	80.5970153808594
2002	83.5820922851563
2003	81.0945281982422
2004	80.288459777832
2005	81.25
2006	86.0576934814453
2007	81.7307662963867
2008	79.8076934814453
2009	82.4644546508789
2010	78.1990509033203
2011	75.1173706054688
2012	77.9342727661133
2013	77.4647903442383
2014	81.7733993530273
2015	83.2512283325195
2016	82.7586212158203
2017	81.7733993530273
2018	80.5825271606445
2019	81.6425094604492
2020	80.6763305664063
2021	81.6425094604492
2022	85.0241546630859