Year	Number
1996	-1.21580410003662
1998	-0.973842918872833
2000	-0.63773787021637
2002	0.00340562732890248
2003	-0.120493672788143
2004	-0.176049947738647
2005	-0.206954583525658
2006	0.214458927512169
2007	0.305300176143646
2008	0.281703680753708
2009	0.334455043077469
2010	0.285615712404251
2011	0.278624475002289
2012	0.198943495750427
2013	0.285488486289978
2014	0.212628602981567
2015	0.231072276830673
2016	0.199925392866135
2017	0.117243885993958
2018	-0.0149717060849071
2019	-0.0468808114528656
2020	-0.120646119117737
2021	-0.12786765396595
2022	-0.099995344877243