Year	Number
1996	57.7889442443848
1998	58.5
2000	55.2238807678223
2002	57.2139320373535
2003	49.7512435913086
2004	44.230770111084
2005	43.5406684875488
2006	37.3205757141113
2007	40.6698570251465
2008	36.538459777832
2009	37.4407577514648
2010	36.9668235778809
2011	40.8450698852539
2012	40.3755874633789
2013	40.3755874633789
2014	38.461540222168
2015	39.0476188659668
2016	31.9047622680664
2017	36.6666679382324
2018	35.7142868041992
2019	35.7142868041992
2020	37.1428565979004
2021	36.1904754638672
2022	36.7924537658691