Year	Number
1996	19.8924732208252
1998	23.529411315918
2000	15.4255323410034
2002	42.8571434020996
2003	24.8677253723145
2004	22.660099029541
2005	20.9756088256836
2006	18.536584854126
2007	16.990291595459
2008	13.5922327041626
2009	16.2679424285889
2010	12.8571424484253
2011	13.2701425552368
2012	10.4265403747559
2013	8.53080558776855
2014	1.44230771064758
2015	1.90476191043854
2016	1.90476191043854
2017	2.38095235824585
2018	1.42857146263123
2019	1.42857146263123
2020	0.476190477609634
2021	0.476190477609634
2022	0.943396210670471