Year	Number
1996	-0.076127216219902
1998	-0.3128622174263
2000	-0.0204347390681505
2002	0.0525650456547737
2003	0.0348631851375103
2004	-0.0198382139205933
2005	0.144592627882957
2006	0.10542806237936
2007	0.326100617647171
2008	0.289960533380508
2009	0.28977906703949
2010	0.315034985542297
2011	0.365056276321411
2012	0.432250022888184
2013	0.399253934621811
2014	0.393015295267105
2015	0.199838370084763
2016	-0.00592907937243581
2017	0.0139715606346726
2018	-0.0683634132146835
2019	-0.0203610323369503
2020	-0.158615037798882
2021	-0.118561923503876
2022	-0.19902965426445