Year	Number
1996	83.606559753418
1998	86.8852462768555
2000	86.8852462768555
2002	85.9459457397461
2003	84.3243255615234
2004	83.5820922851563
2005	81.8627471923828
2006	83.9024353027344
2007	82.0388336181641
2008	81.5533981323242
2009	79.9043045043945
2010	78.9473648071289
2011	79.1469192504883
2012	76.7772521972656
2013	78.6729888916016
2014	75.961540222168
2015	75.7142868041992
2016	74.2857131958008
2017	76.1904754638672
2018	74.2857131958008
2019	76.1904754638672
2020	78.0952377319336
2021	79.523811340332
2022	77.3584899902344