Year	Number
2004	32.3383102416992
2005	33.3333320617676
2006	24.0196075439453
2007	22.8155345916748
2008	21.8446598052979
2009	31.1004791259766
2010	31.1004791259766
2011	29.8578205108643
2012	28.9099521636963
2013	28.4360198974609
2014	36.538459777832
2015	38.0952377319336
2016	36.6666679382324
2017	35.7142868041992
2018	38.5714302062988
2019	41.4285697937012
2020	38.0952377319336
2021	41.4285697937012
2022	40.0943412780762