Year	Number
1996	5.4347825050354
1998	7.60869550704956
2000	6.52173900604248
2002	7.02702713012695
2003	12.4324321746826
2004	14.4278602600098
2005	14.2156858444214
2006	13.235294342041
2007	16.019416809082
2008	17.4757289886475
2009	23.4449768066406
2010	24.4019145965576
2011	26.0663509368896
2012	27.014217376709
2013	25.5924167633057
2014	24.519229888916
2015	16.6666660308838
2016	16.6666660308838
2017	15.2380952835083
2018	14.7619047164917
2019	15.7142858505249
2020	15.7142858505249
2021	14.2857141494751
2022	15.0943393707275