Year	Number
2005	-0.297008544206619
2006	-0.945403099060059
2007	-0.907076895236969
2008	-1.04394602775574
2009	-1.2219625711441
2010	-1.23685681819916
2011	-1.01274001598358
2012	-1.05861532688141
2013	-1.11494529247284
2014	-1.0034898519516
2015	-0.984151840209961
2016	-0.890493035316467
2017	-0.951291859149933
2018	-0.797005653381348
2019	-0.726854741573334
2020	-0.670987486839294
2021	-0.64892190694809
2022	-0.394462466239929