Year	Number
1998	-0.793224990367889
2000	0.316736131906509
2002	0.274070203304291
2003	-0.175401419401169
2004	-0.215662121772766
2005	-0.138817459344864
2006	-0.21269017457962
2007	-0.194273695349693
2008	-0.0889046341180801
2009	-0.0165532864630222
2010	-0.0636136308312416
2011	-0.0588617920875549
2012	-0.0584805831313133
2013	-0.0342143811285496
2014	0.0142629137262702
2015	-0.0448989756405354
2016	-0.133728697896004
2017	-0.109790176153183
2018	0.00317244976758957
2019	-0.00688066845759749
2020	-0.0394584313035011
2021	-0.0835481733083725
2022	-0.12540140748024