Year	Percent
1960-01-01	1.477833789502900
1961-01-01	2.103561662035120
1962-01-01	-0.475436212725159
1963-01-01	3.184716044850860
1964-01-01	0.617284451985414
1965-01-01	3.220861495690610
1966-01-01	4.903408334043670
1967-01-01	1.841330312771770
1968-01-01	0.139057819223741
1969-01-01	2.638886494541250
1970-01-01	2.841681990858190
1971-01-01	3.289478240274570
1972-01-01	4.331215998948710
1973-01-01	15.384635157939900
1974-01-01	26.560834375755300
1975-01-01	13.628768033406100
1976-01-01	13.024294465570700
1977-01-01	12.369773325612500
1978-01-01	12.572437119518300
1979-01-01	19.094177852130900
1980-01-01	24.675891229462800
1981-01-01	24.506066837496000
1982-01-01	20.991084820636300
1983-01-01	20.179483254228600
1984-01-01	18.456852135771500
1985-01-01	19.314651814913400
1986-01-01	23.015446552598900
1987-01-01	16.396891597716000
1988-01-01	13.528835528060700
1989-01-01	13.655567872009200
1990-01-01	20.433499644505600
1991-01-01	19.455842558084000
1992-01-01	15.877065379225800
1993-01-01	14.411270894024200
1994-01-01	10.874078979880500
1995-01-01	8.934511216523790
1996-01-01	8.194548902041710
1997-01-01	5.536006783999030
1998-01-01	4.766221863712470
1999-01-01	2.636637862803520
2000-01-01	3.151180629957340
2001-01-01	3.373966990382810
2002-01-01	3.629358945575490
2003-01-01	3.530651884980460
2004-01-01	2.898848958820320
2005-01-01	3.545073540363970
2006-01-01	3.195943930173970
2007-01-01	2.895001474895790
2008-01-01	4.152797447329850
2009-01-01	1.210084517834190
2010-01-01	4.712972862036050
2011-01-01	3.329864061747200
2012-01-01	1.501527960545810
2013-01-01	-0.922168807001954
2014-01-01	-1.311210501324940
2015-01-01	-1.736036795980800
2016-01-01	-0.825651781826954
2017-01-01	1.121235477207900