Year	Number
1996	69.5
1998	65.6716384887695
2000	74.1293563842773
2002	80.0995025634766
2003	82.0895538330078
2004	88.9423065185547
2005	89.4230804443359
2006	86.0576934814453
2007	85.0961532592773
2008	80.288459777832
2009	79.1469192504883
2010	82.9383850097656
2011	82.6291046142578
2012	83.0985946655273
2013	84.5070419311523
2014	80.7881774902344
2015	79.3103485107422
2016	77.8325119018555
2017	79.8029556274414
2018	81.0679626464844
2019	79.7101440429688
2020	79.7101440429688
2021	78.260871887207
2022	78.260871887207