Year	Number
1996	51.075267791748
1998	34.7593574523926
2000	36.1702117919922
2002	51.3227500915527
2003	48.6772499084473
2004	51.2315254211426
2005	46.3414649963379
2006	40.4878044128418
2007	36.8932037353516
2008	37.8640785217285
2009	38.7559814453125
2010	38.0952377319336
2011	38.8625602722168
2012	34.5971565246582
2013	36.9668235778809
2014	29.8076915740967
2015	28.0952377319336
2016	30.4761905670166
2017	26.6666660308838
2018	22.8571434020996
2019	24.2857151031494
2020	18.5714282989502
2021	17.619047164917
2022	16.9811325073242