Year	Percent
1960-01-01	-5.0300415959369000
1961-01-01	3.7797063834267600
1962-01-01	-0.5549042598695240
1963-01-01	4.3068217543595600
1964-01-01	9.1621458712944200
1965-01-01	2.2639425728972700
1966-01-01	8.3018358533230600
1967-01-01	-2.9353109810065500
1968-01-01	1.3162118782735800
1969-01-01	1.4131812420197600
1970-01-01	1.3684934073666500
1971-01-01	9.5795832822563400
1972-01-01	3.1896939691793000
1973-01-01	22.7389194789195000
1974-01-01	14.9506973439721000
1975-01-01	16.7735703245817000
1976-01-01	7.0381522782362000
1977-01-01	6.4919005811333400
1978-01-01	-2.6735949836929400
1979-01-01	13.0939242998194000
1980-01-01	17.7783052456577000
1981-01-01	10.8583333329997000
1982-01-01	7.3592422760505000
1983-01-01	10.2436633526545000
1984-01-01	6.4020323910607600
1985-01-01	10.6488390138928000
1986-01-01	3.2799266336661900
1987-01-01	-11.4494646121705000
1988-01-01	4.1054680587505900
1989-01-01	6.9239050371123900
1990-01-01	21.2760320067832000
1991-01-01	15.4199073669492000
1992-01-01	19.3584946541220000
1993-01-01	29.7059715065173000
1994-01-01	39.3316195372753000
1995-01-01	27.6081851727601000
1996-01-01	20.5835962145112000
1997-01-01	20.5590073395833000
1998-01-01	10.6343381981750000
1999-01-01	8.6709571968534500
2000-01-01	13.7077215213675000
2001-01-01	14.1732804232802000
2002-01-01	9.8534437814981400
2003-01-01	39.2814455459465000
2004-01-01	22.8117112569410000
2005-01-01	15.7286461900051000
2006-01-01	13.0657120940936000
2007-01-01	8.5287846481877200
2008-01-01	15.5196761326427000
2009-01-01	-0.0146362781799481
2010-01-01	5.6965110233999600
2011-01-01	8.4014667170682700
2012-01-01	6.2890818300418300
2013-01-01	5.8534727218859800
2014-01-01	4.5661735305877600
2015-01-01	9.0165188130926900
2016-01-01	13.8337425464749000
2017-01-01	14.6730757379676000