Year	Percent
1960-01-01	-1.190693153460020
1961-01-01	-0.553335382726570
1962-01-01	2.052550232097020
1963-01-01	0.151450899375902
1964-01-01	-0.193563997036548
1965-01-01	-0.800000000003547
1966-01-01	0.684261974465227
1967-01-01	0.485436893448737
1968-01-01	1.926328502300880
1969-01-01	2.097280644715730
1970-01-01	2.344339348814140
1971-01-01	-0.453591880763764
1972-01-01	0.529703252323035
1973-01-01	13.796033994501900
1974-01-01	16.494896689013400
1975-01-01	13.159244379858200
1976-01-01	10.724999999250000
1977-01-01	12.324579686099900
1978-01-01	8.287976249577050
1979-01-01	11.343385881160800
1980-01-01	10.823843233541000
1981-01-01	11.433067950350500
1982-01-01	0.307385561437073
1983-01-01	4.538678151332520
1984-01-01	3.406750118377920
1985-01-01	18.686791297123800
1986-01-01	36.931121296501600
1987-01-01	12.323213275504600
1988-01-01	10.832703768991300
1989-01-01	11.387132199795800
1990-01-01	41.221867138097300
1991-01-01	33.166421916753500
1992-01-01	10.045917998408800
1993-01-01	11.819690174625700
1994-01-01	10.855321149439100
1995-01-01	8.411413122705690
1996-01-01	11.056916532198700
1997-01-01	9.232902948849390
1998-01-01	6.613460705180570
1999-01-01	5.213610586011200
2000-01-01	5.977577347371360
2001-01-01	7.285873666101360
2002-01-01	8.132630542810530
2003-01-01	5.603476754344710
2004-01-01	7.578622473097310
2005-01-01	9.108649857192160
2006-01-01	6.560852827954100
2007-01-01	6.821617535903040
2008-01-01	11.355761126315500
2009-01-01	1.859102547330030
2010-01-01	3.859509098331890
2011-01-01	6.215341763122350
2012-01-01	3.782500239854180
2013-01-01	4.343371312795140
2014-01-01	3.418361696629630
2015-01-01	2.388720328395520
2016-01-01	4.448441999428240
2017-01-01	4.424536551825410