Year	Number
1996	-0.0809926018118858
1998	-0.00413450365886092
2000	-0.0384254194796085
2002	-0.127914935350418
2003	-0.0528743378818035
2004	-0.17975702881813
2005	-0.135859340429306
2006	-0.226305484771729
2007	-0.246702715754509
2008	-0.234130024909973
2009	-0.124648116528988
2010	-0.0577610395848751
2011	-0.0477658435702324
2012	-0.0615747198462486
2013	-0.0488410405814648
2014	-0.136010766029358
2015	-0.216468393802643
2016	-0.174920201301575
2017	-0.173062905669212
2018	-0.0880336835980415
2019	-0.0838309824466705
2020	-0.132176607847214
2021	-0.125704720616341
2022	-0.127625867724419