Year	Number
1996	52.7638206481934
1998	45.5
2000	40.7960205078125
2002	42.7860679626465
2003	47.7611923217773
2004	42.3076934814453
2005	39.2344512939453
2006	46.8899536132813
2007	43.5406684875488
2008	49.038459777832
2009	49.2891006469727
2010	49.7630348205566
2011	47.8873252868652
2012	47.417839050293
2013	48.3568077087402
2014	57.6923065185547
2015	56.6666679382324
2016	52.8571434020996
2017	54.761905670166
2018	54.2857131958008
2019	48.0952377319336
2020	46.1904754638672
2021	42.3809509277344
2022	41.5094337463379