Year	Number
1996	1.02049589157104
1998	0.624708473682404
2000	0.645909368991852
2002	0.607831418514252
2003	0.599580049514771
2004	0.559140086174011
2005	0.567057847976685
2006	0.325101375579834
2007	0.283431172370911
2008	0.332178503274918
2009	0.310807675123215
2010	0.191702410578728
2011	0.217559650540352
2012	0.170115306973457
2013	0.306189775466919
2014	0.16547679901123
2015	0.0877392515540123
2016	0.101931490004063
2017	0.0708981901407242
2018	0.103732906281948
2019	0.12788100540638
2020	0.0452405549585819
2021	-0.0710126981139183
2022	-0.125317960977554