Year	Number
1996	83.5
1998	85.0746231079102
2000	87.0646743774414
2002	87.5621871948242
2003	80.0995025634766
2004	81.25
2005	77.8846130371094
2006	80.7692337036133
2007	84.6153869628906
2008	86.0576934814453
2009	78.1990509033203
2010	76.7772521972656
2011	75.5868530273438
2012	75.5868530273438
2013	74.6478881835938
2014	80.2955627441406
2015	75.8620681762695
2016	74.8768463134766
2017	74.8768463134766
2018	72.3300933837891
2019	76.328498840332
2020	76.8115921020508
2021	75.3623199462891
2022	74.3961334228516