Year	Number
1996	-0.380564451217651
1998	-0.349467724561691
2000	-0.396729677915573
2002	-0.498171955347061
2003	-0.453014016151428
2004	-0.710523724555969
2005	-0.718027710914612
2006	-0.837106347084045
2007	-0.753381907939911
2008	-0.736189842224121
2009	-0.760530889034271
2010	-0.861178874969482
2011	-0.752287983894348
2012	-0.736109614372253
2013	-0.764389455318451
2014	-0.868977010250092
2015	-0.850032985210419
2016	-0.77739429473877
2017	-0.847048699855804
2018	-0.783992767333984
2019	-0.754292130470276
2020	-0.713890075683594
2021	-0.762018024921417
2022	-0.843731462955475