Year	Number
1996	69.5652160644531
1998	71.739128112793
2000	72.2826080322266
2002	71.3513488769531
2003	69.7297286987305
2004	69.1542282104492
2005	67.6470565795898
2006	70.5882339477539
2007	71.3592224121094
2008	70.8737869262695
2009	68.8995208740234
2010	67.464111328125
2011	67.2985763549805
2012	59.2417068481445
2013	58.7677726745605
2014	55.769229888916
2015	54.2857131958008
2016	52.3809509277344
2017	54.761905670166
2018	48.5714302062988
2019	45.238094329834
2020	45.238094329834
2021	48.5714302062988
2022	50