Year	Percent
1960-01-01	-3.562191799760560
1961-01-01	-3.900000000999860
1962-01-01	9.157127991770670
1963-01-01	8.579599618766210
1964-01-01	2.107111501335460
1965-01-01	-1.891659501306100
1966-01-01	0.262927256794524
1967-01-01	1.238344988719870
1968-01-01	0.035976399338253
1969-01-01	0.956628066179094
1970-01-01	3.816666666417120
1971-01-01	3.580028896781320
1972-01-01	8.640731556075750
1973-01-01	15.079534916913800
1974-01-01	13.140767371485400
1975-01-01	14.501725743761600
1976-01-01	7.765550239256800
1977-01-01	12.853527505428600
1978-01-01	3.477850342121760
1979-01-01	9.173805133514510
1980-01-01	16.753135689710200
1981-01-01	7.514638906961590
1982-01-01	7.646243066061480
1983-01-01	5.628623294489830
1984-01-01	20.151678105353600
1985-01-01	45.336175553217800
1986-01-01	7.638972665799330
1987-01-01	13.550723782782300
1988-01-01	43.863832351505200
1989-01-01	40.657916117500500
1990-01-01	50.462479237852400
1991-01-01	47.079157410535900
1992-01-01	4.259026388934000
1993-01-01	5.250338806909720
1994-01-01	8.260767985758280
1995-01-01	12.535959455896300
1996-01-01	5.399293850389200
1997-01-01	8.296567547920470
1998-01-01	4.831665585918960
1999-01-01	6.470541868469300
2000-01-01	7.724135661816000
2001-01-01	8.883068488130140
2002-01-01	5.223367697594570
2003-01-01	27.449712739439300
2004-01-01	51.460859833806600
2005-01-01	4.190202604720480
2006-01-01	7.572805238530760
2007-01-01	6.143566552480490
2008-01-01	10.644621095371300
2009-01-01	1.442151318343360
2010-01-01	6.329932201461460
2011-01-01	8.740359897172250
2012-01-01	3.624901497241910
2013-01-01	4.714828897338420
2014-01-01	3.050108932461870
2015-01-01	0.826638477801279
2016-01-01	1.594989970155090
2017-01-01	3.279556946785460