Year	Number
1996	54.5
1998	54.7263679504395
2000	52.2388076782227
2002	52.2388076782227
2003	50.7462692260742
2004	59.1346168518066
2005	56.25
2006	50
2007	49.038459777832
2008	47.5961532592773
2009	49.2891006469727
2010	52.1327018737793
2011	49.7652587890625
2012	51.1737098693848
2013	49.2957763671875
2014	47.290641784668
2015	49.7536964416504
2016	50.2463035583496
2017	53.694580078125
2018	53.8834953308105
2019	57.0048294067383
2020	60.386474609375
2021	66.1835784912109
2022	64.7342987060547