Year	Number
1996	-0.0641570091247559
1998	-0.193280413746834
2000	-0.280598551034927
2002	-0.798159539699554
2003	-0.920003414154053
2004	-1.13482713699341
2005	-1.14681553840637
2006	-0.908803641796112
2007	-0.58556193113327
2008	-0.496126413345337
2009	-0.441024661064148
2010	-0.447481632232666
2011	-0.445125788450241
2012	-0.642363488674164
2013	-0.528574824333191
2014	-0.430445671081543
2015	-0.415430843830109
2016	-0.251382678747177
2017	-0.199515789747238
2018	-0.129691317677498
2019	-0.150054275989532
2020	-0.0840387791395187
2021	-0.0844647586345673
2022	-0.049159400165081