Year	Number
2004	0.063400998711586
2005	0.247530341148376
2006	0.00173039315268397
2007	-0.446476101875305
2008	-0.697731018066406
2009	-0.679592251777649
2010	-0.781638503074646
2011	-0.684840023517609
2012	-0.744923710823059
2013	-0.537155151367188
2014	-0.325082302093506
2015	-0.332273960113525
2016	-0.296668529510498
2017	-0.313644230365753
2018	-0.434423208236694
2019	-0.425862520933151
2020	-0.379000276327133
2021	-0.108174562454224
2022	-0.0908161327242851