Year	Number
1996	-0.339192003011703
1998	-0.964446723461151
2000	-0.241125971078873
2002	-0.313102960586548
2003	-0.91280323266983
2004	-0.344115853309631
2005	-0.812229692935944
2006	-0.262578547000885
2007	-0.123644053936005
2008	0.268389225006104
2009	0.494239002466202
2010	0.253481268882751
2011	0.177703246474266
2012	0.160619214177132
2013	-0.102187521755695
2014	-0.770232260227203
2015	-0.447671920061111
2016	-0.628553986549377
2017	-0.73394501209259
2018	-0.133512377738953
2019	-0.343412548303604
2020	-0.448214262723923
2021	-0.56633985042572
2022	-0.508419454097748