Year	Number
1996	41.5300559997559
1998	44.2622947692871
2000	42.0765037536621
2002	38.9189186096191
2003	40
2004	26.8656711578369
2005	28.4313716888428
2006	22.9268283843994
2007	24.7572822570801
2008	26.6990299224854
2009	25.3588523864746
2010	22.4880390167236
2011	25.5924167633057
2012	26.5402851104736
2013	25.1184825897217
2014	18.269229888916
2015	20
2016	22.380952835083
2017	19.5238094329834
2018	21.4285717010498
2019	24.2857151031494
2020	25.238094329834
2021	24.2857151031494
2022	20.2830181121826