Year	Number
1996	80
1998	75.1243743896484
2000	78.6069641113281
2002	72.6368179321289
2003	74.6268692016602
2004	79.3269195556641
2005	77.4038467407227
2006	78.3653869628906
2007	78.3653869628906
2008	75.961540222168
2009	70.1421813964844
2010	72.0379180908203
2011	74.6478881835938
2012	73.7089233398438
2013	73.2394332885742
2014	76.3546829223633
2015	78.8177337646484
2016	81.2807846069336
2017	76.8472900390625
2018	76.6990280151367
2019	74.8792266845703
2020	75.3623199462891
2021	76.8115921020508
2022	75.3623199462891