Year	Number
1996	-0.0665459185838699
1998	-0.106951557099819
2000	-0.13722226023674
2002	-0.403108656406403
2003	-0.410212010145187
2004	-0.430486381053925
2005	-0.460677325725555
2006	-0.348091393709183
2007	-0.283888220787048
2008	-0.201783880591393
2009	-0.144404068589211
2010	-0.13256624341011
2011	-0.10300300270319
2012	-0.115930549800396
2013	-0.0857678055763245
2014	0.014869668520987
2015	-0.0809350684285164
2016	-0.133195176720619
2017	-0.0484817586839199
2018	-0.0323153994977474
2019	-0.0475217662751675
2020	-0.0109160682186484
2021	0.00338109792210162
2022	0.101790711283684