Year	Number
1996	79.5
1998	81.592041015625
2000	82.0895538330078
2002	83.0845794677734
2003	81.592041015625
2004	81.7307662963867
2005	77.4038467407227
2006	78.3653869628906
2007	79.8076934814453
2008	82.211540222168
2009	78.6729888916016
2010	76.3033142089844
2011	76.9953079223633
2012	76.5258178710938
2013	76.9953079223633
2014	81.2807846069336
2015	74.3842391967773
2016	75.3694610595703
2017	75.8620681762695
2018	73.7864074707031
2019	74.8792266845703
2020	73.9130401611328
2021	72.4637680053711
2022	71.4975814819336