Year	Number
1996	-0.545589983463287
1998	-0.476805359125137
2000	-0.51611715555191
2002	-0.517029762268066
2003	-0.553043842315674
2004	-0.585468709468842
2005	-0.650172889232636
2006	-0.699893414974213
2007	-0.597397744655609
2008	-0.479174673557281
2009	-0.46321377158165
2010	-0.472601860761642
2011	-0.453809976577759
2012	-0.545384466648102
2013	-0.525990128517151
2014	-0.396166622638702
2015	-0.409359097480774
2016	-0.32486966252327
2017	-0.256216943264008
2018	-0.186719536781311
2019	-0.262363702058792
2020	-0.10228705406189
2021	0.0107609163969755
2022	-0.0414439849555492