Year	Number
1996	82.5
1998	83.0845794677734
2000	84.5771179199219
2002	82.0895538330078
2003	75.1243743896484
2004	78.3653869628906
2005	76.4423065185547
2006	75.961540222168
2007	74.5192337036133
2008	79.8076934814453
2009	75.3554534912109
2010	79.620849609375
2011	72.3004684448242
2012	72.3004684448242
2013	73.2394332885742
2014	77.3399047851563
2015	79.8029556274414
2016	73.3990173339844
2017	74.3842391967773
2018	69.9029159545898
2019	68.5990371704102
2020	68.5990371704102
2021	68.1159439086914
2022	69.5652160644531