Year	Number
1996	32.6633148193359
1998	35.5
2000	51.7412948608398
2002	52.2388076782227
2003	49.7512435913086
2004	50.480770111084
2005	55.5023918151855
2006	55.0239219665527
2007	56.9377975463867
2008	58.1730766296387
2009	56.8720397949219
2010	52.1327018737793
2011	53.9906120300293
2012	54.9295768737793
2013	54.9295768737793
2014	50
2015	45.7142868041992
2016	51.4285697937012
2017	54.2857131958008
2018	50.476188659668
2019	44.2857131958008
2020	44.761905670166
2021	50.9523811340332
2022	45.7547187805176