Year	Number
1996	0.161260232329369
1998	0.0642771571874619
2000	0.159529581665993
2002	0.338851630687714
2003	0.244941875338554
2004	0.21113657951355
2005	0.158469423651695
2006	0.177752673625946
2007	0.131876915693283
2008	-0.000771665305364877
2009	-0.101635470986366
2010	-0.118414133787155
2011	-0.117064774036407
2012	-0.114084355533123
2013	-0.265588670969009
2014	-0.149271368980408
2015	0.0317260250449181
2016	0.107241459190845
2017	0.0267022158950567
2018	-0.000408620457164943
2019	0.0395575873553753
2020	-0.00758194550871849
2021	0.0178692117333412
2022	-0.0569253154098988