Year	Number
1996	76.0869598388672
1998	72.2826080322266
2000	76.6304321289063
2002	75.6756744384766
2003	80
2004	81.0945281982422
2005	78.4313735961914
2006	78.9215698242188
2007	78.1553421020508
2008	79.1262130737305
2009	78.4689025878906
2010	77.511962890625
2011	74.8815155029297
2012	74.407585144043
2013	74.8815155029297
2014	71.1538467407227
2015	73.8095245361328
2016	73.8095245361328
2017	74.7619018554688
2018	75.2380981445313
2019	77.1428604125977
2020	68.0952377319336
2021	68.5714263916016
2022	68.8679275512695