Year	Number
1996	62.5
1998	56.7164192199707
2000	65.6716384887695
2002	72.1393051147461
2003	71.6417922973633
2004	80.288459777832
2005	81.25
2006	74.038459777832
2007	73.0769195556641
2008	71.1538467407227
2009	70.1421813964844
2010	72.9857788085938
2011	74.6478881835938
2012	73.7089233398438
2013	73.7089233398438
2014	71.9211807250977
2015	71.9211807250977
2016	71.9211807250977
2017	73.3990173339844
2018	74.271842956543
2019	71.4975814819336
2020	71.4975814819336
2021	69.5652160644531
2022	70.5314025878906