Year	Percent
1960-01-01	4.1417791509021600
1961-01-01	2.1579731098195900
1962-01-01	4.7661972190582900
1963-01-01	2.8717403448576900
1964-01-01	3.3876623108835000
1965-01-01	5.0127712964383200
1966-01-01	6.4048082534842100
1967-01-01	4.2893192299332400
1968-01-01	1.9431258247323600
1969-01-01	2.6919945855570200
1970-01-01	7.0163588510076500
1971-01-01	7.3955411383763600
1972-01-01	6.0073896986249500
1973-01-01	6.7179973981935300
1974-01-01	9.9117253011324000
1975-01-01	9.7798739882257400
1976-01-01	10.2492246529784000
1977-01-01	11.4418051091076000
1978-01-01	9.9952654171773800
1979-01-01	7.2097861704780700
1980-01-01	13.7063223649004000
1981-01-01	12.1039385302599000
1982-01-01	8.5891850904711600
1983-01-01	8.8730215236321800
1984-01-01	8.0442423899442200
1985-01-01	7.3725745812624400
1986-01-01	4.2359101108979300
1987-01-01	4.1885715177136700
1988-01-01	5.8248986843944200
1989-01-01	6.4432758742660100
1990-01-01	10.3665533879494000
1991-01-01	9.4446273294418700
1992-01-01	2.3743672511187900
1993-01-01	4.7281730462605500
1994-01-01	2.1581380072462700
1995-01-01	2.4551485781839600
1996-01-01	0.5331319787662510
1997-01-01	0.6584102562435240
1998-01-01	-0.2671326683549670
1999-01-01	0.4621757563391310
2000-01-01	0.8991437340417430
2001-01-01	2.4059583414543500
2002-01-01	2.1584821358926300
2003-01-01	1.9256553489238700
2004-01-01	0.3736598287217960
2005-01-01	0.4531708525761760
2006-01-01	1.3602146862768800
2007-01-01	2.2121688343673500
2008-01-01	3.4370491060287500
2009-01-01	-0.4944605443780460
2010-01-01	1.1579880271562900
2011-01-01	2.9611507382213900
2012-01-01	0.8883775069237000
2013-01-01	-0.0442929701486557
2014-01-01	-0.1796384941146500
2015-01-01	-0.0467847449832651
2016-01-01	0.9842692445779780
2017-01-01	1.7944990466559600