Year	Number
1996	-0.68902987241745
1998	-0.614243030548096
2000	-0.733862698078156
2002	-1.18077600002289
2003	-1.20058274269104
2004	-1.33551788330078
2005	-1.2315981388092
2006	-0.712554454803467
2007	-0.612985610961914
2008	-0.587012767791748
2009	-0.657142221927643
2010	-0.711512327194214
2011	-0.749023735523224
2012	-0.762743711471558
2013	-0.749445259571075
2014	-0.791099786758423
2015	-0.79869145154953
2016	-0.759351909160614
2017	-0.73696905374527
2018	-0.752232193946838
2019	-0.7463658452034
2020	-0.840826332569122
2021	-0.952238917350769
2022	-1.19199299812317