Year	Number
1996	62.5
1998	60.3260879516602
2000	61.4130439758301
2002	65.9459457397461
2003	61.6216201782227
2004	63.6815910339355
2005	61.764705657959
2006	60.7843132019043
2007	64.0776672363281
2008	62.1359214782715
2009	62.2009582519531
2010	63.6363639831543
2011	62.0853080749512
2012	61.1374397277832
2013	59.7156410217285
2014	63.461540222168
2015	66.1904754638672
2016	62.3809509277344
2017	55.238094329834
2018	56.6666679382324
2019	60.476188659668
2020	58.0952377319336
2021	67.1428604125977
2022	71.698112487793