Year	Number
2004	0.0892193168401718
2005	-1.35349369049072
2006	-1.37763321399689
2007	-1.05548179149628
2008	-0.679467141628265
2009	-0.676430940628052
2010	-0.303076356649399
2011	-0.320604383945465
2012	-0.298795193433762
2013	-0.259107977151871
2014	-0.273024380207062
2015	-0.460351884365082
2016	-0.453665733337402
2017	-0.17983216047287
2018	-0.0709535777568817
2019	-0.329820722341537
2020	-0.344353854656219
2021	-0.428654044866562
2022	-0.420627415180206