Year	Number
1996	0.360743492841721
1998	0.465829730033875
2000	0.320122689008713
2002	0.582995772361755
2003	0.224924057722092
2004	0.230400413274765
2005	0.142397329211235
2006	0.173593416810036
2007	0.0460881590843201
2008	0.376434057950974
2009	0.241088286042213
2010	0.213284954428673
2011	0.0923139303922653
2012	0.155978977680206
2013	0.164272174239159
2014	0.0766165852546692
2015	0.0441579781472683
2016	-0.0070494213141501
2017	-0.117812462151051
2018	-0.000688285275828093
2019	-0.000301949679851532
2020	0.00997759960591793
2021	-0.0211970582604408
2022	-0.0150013873353601