Year	Number
1996	17.3913040161133
1998	13.043478012085
2000	11.4130430221558
2002	9.72972965240479
2003	14.5945949554443
2004	9.45273590087891
2005	13.7254905700684
2006	14.7058820724487
2007	16.5048542022705
2008	16.990291595459
2009	20.0956935882568
2010	19.1387557983398
2011	11.8483409881592
2012	16.5876770019531
2013	15.1658763885498
2014	8.17307662963867
2015	4.7619047164917
2016	2.38095235824585
2017	3.33333325386047
2018	2.85714292526245
2019	1.90476191043854
2020	0.476190477609634
2021	0
2022	0.471698105335236