Year	Number
1996	-0.344958007335663
1998	-0.222114488482475
2000	-0.123777076601982
2002	-0.0560499913990498
2003	-0.171991765499115
2004	-0.118167765438557
2005	-0.108557619154453
2006	-0.108846172690392
2007	-0.0576844252645969
2008	-0.121088020503521
2009	-0.0403123535215855
2010	-0.0970613583922386
2011	-0.141564160585403
2012	-0.115051358938217
2013	-0.147228062152863
2014	-0.0819186419248581
2015	-0.159006893634796
2016	-0.139942422509193
2017	-0.124983504414558
2018	-0.105625674128532
2019	-0.0369428768754005
2020	-0.127281367778778
2021	-0.0683560520410538
2022	-0.107211574912071