Year	Number
2004	-0.670572936534882
2005	0.0171205885708332
2006	-0.348828822374344
2007	-0.456449925899506
2008	-0.577143430709839
2009	-0.447568625211716
2010	-0.492254197597504
2011	-0.47755566239357
2012	-0.69348156452179
2013	-0.658958196640015
2014	-0.97246515750885
2015	-0.968938410282135
2016	-0.921274960041046
2017	-0.694827735424042
2018	-0.553974688053131
2019	-0.536815643310547
2020	-0.430197656154633
2021	-0.402606576681137
2022	-0.311674624681473