Year	Number
1996	60.7526893615723
1998	60.427806854248
2000	60.638298034668
2002	65.0793685913086
2003	62.4338607788086
2004	50.7389144897461
2005	44.8780479431152
2006	39.5121955871582
2007	40.2912635803223
2008	41.262134552002
2009	49.7607650756836
2010	47.6190490722656
2011	52.6066360473633
2012	44.5497627258301
2013	41.7061614990234
2014	41.8269233703613
2015	35.238094329834
2016	32.3809509277344
2017	42.3809509277344
2018	45.238094329834
2019	49.523811340332
2020	46.6666679382324
2021	49.523811340332
2022	52.8301887512207