Year	Number
1996	0.440209209918976
1998	0.599269092082977
2000	0.212451234459877
2002	0.492683351039886
2003	0.483302503824234
2004	0.30226343870163
2005	0.233044505119324
2006	-0.0139150014147162
2007	-0.0173227712512016
2008	0.0996380820870399
2009	0.147267401218414
2010	0.0824754610657692
2011	0.119975283741951
2012	0.0793254524469376
2013	0.132779225707054
2014	0.249270841479301
2015	0.249509304761887
2016	0.152817890048027
2017	0.119800709187984
2018	0.0581610128283501
2019	0.0876266658306122
2020	0.418793022632599
2021	0.348301738500595
2022	0.39629203081131