Year	Number
1996	-0.1044110506773
1998	0.210070848464966
2000	0.454069554805756
2002	0.341267883777618
2003	0.473294764757156
2004	0.408443540334702
2005	0.185300454497337
2006	0.115620285272598
2007	0.243874251842499
2008	0.230824679136276
2009	0.349971473217011
2010	0.339617520570755
2011	0.391060173511505
2012	0.481707990169525
2013	0.416812211275101
2014	0.335749626159668
2015	0.253743559122086
2016	0.247532933950424
2017	0.225759148597717
2018	0.206865146756172
2019	0.0881585031747818
2020	0.174368306994438
2021	0.154986903071404
2022	-0.0251202769577503