Year	Number
1996	-0.0455957651138306
1998	0.474642664194107
2000	0.506152808666229
2002	0.65882533788681
2003	0.507493376731873
2004	0.504270613193512
2005	0.705090939998627
2006	0.923123240470886
2007	0.670674502849579
2008	0.932359039783478
2009	1.558678150177
2010	1.40004742145538
2011	1.00110983848572
2012	1.05304300785065
2013	1.103670835495
2014	0.983825206756592
2015	0.856370568275452
2016	0.86328911781311
2017	0.698586344718933
2018	0.692682802677155
2019	0.817250907421112
2020	0.754299998283386
2021	0.77996701002121
2022	0.803727507591248