Year	Number
1996	60
1998	59.7014923095703
2000	65.1741256713867
2002	69.1542282104492
2003	67.164176940918
2004	70.1923065185547
2005	67.3076934814453
2006	69.2307662963867
2007	68.75
2008	68.2692337036133
2009	68.2464447021484
2010	68.7203826904297
2011	69.9530487060547
2012	70.8920211791992
2013	70.4225387573242
2014	70.9359588623047
2015	71.4285736083984
2016	70.9359588623047
2017	70.9359588623047
2018	69.9029159545898
2019	69.0821228027344
2020	70.5314025878906
2021	69.5652160644531
2022	69.5652160644531