Year	Number
1996	68.5
1998	65.1741256713867
2000	61.1940307617188
2002	69.651741027832
2003	70.1492538452148
2004	70.6730804443359
2005	68.2692337036133
2006	70.6730804443359
2007	71.1538467407227
2008	71.6346130371094
2009	70.1421813964844
2010	72.0379180908203
2011	72.3004684448242
2012	70.8920211791992
2013	72.3004684448242
2014	71.9211807250977
2015	72.9064025878906
2016	72.9064025878906
2017	70.9359588623047
2018	68.9320373535156
2019	68.1159439086914
2020	71.4975814819336
2021	72.4637680053711
2022	74.3961334228516