Year	Number
1996	70.4918060302734
1998	69.3989105224609
2000	67.2131118774414
2002	65.9459457397461
2003	65.405403137207
2004	69.1542282104492
2005	65.6862716674805
2006	70.2439041137695
2007	68.4466018676758
2008	72.3300933837891
2009	78.4689025878906
2010	76.0765533447266
2011	74.407585144043
2012	77.7251205444336
2013	81.5165863037109
2014	78.3653869628906
2015	77.6190490722656
2016	73.8095245361328
2017	74.2857131958008
2018	73.8095245361328
2019	73.8095245361328
2020	78.0952377319336
2021	81.9047622680664
2022	82.5471725463867