Year	Number
1996	17.3913040161133
1998	17.3913040161133
2000	17.9347820281982
2002	12.972972869873
2003	10.2702703475952
2004	8.4577112197876
2005	23.0392150878906
2006	18.1372547149658
2007	19.4174766540527
2008	21.3592224121094
2009	24.8803825378418
2010	25.8373203277588
2011	27.014217376709
2012	25.5924167633057
2013	26.5402851104736
2014	23.0769233703613
2015	20
2016	17.1428565979004
2017	16.1904754638672
2018	16.6666660308838
2019	14.7619047164917
2020	13.3333330154419
2021	15.7142858505249
2022	12.2641506195068