Year	Percent
1960-01-01	7.788161993768830
1961-01-01	18.562138728107900
1962-01-01	1.675909561401730
1963-01-01	5.574202829150970
1964-01-01	1.845123197749950
1965-01-01	-0.730252522661395
1966-01-01	2.364106019833400
1967-01-01	-4.333753908569060
1968-01-01	-0.286713687770010
1969-01-01	9.655529357621170
1970-01-01	1.772603314513370
1971-01-01	2.061218179952270
1972-01-01	-2.923356558679550
1973-01-01	7.603890362543040
1974-01-01	8.719609454284220
1975-01-01	18.756946605863400
1976-01-01	-8.400718778205450
1977-01-01	29.986104299714100
1978-01-01	8.269140072140460
1979-01-01	14.993465950359500
1980-01-01	12.202636496829900
1981-01-01	7.555705604409410
1982-01-01	12.059765208133700
1983-01-01	8.153762774204270
1984-01-01	4.846957681860850
1985-01-01	6.906057821404640
1986-01-01	-2.611742924767830
1987-01-01	-2.681784235115950
1988-01-01	4.255616017859440
1989-01-01	-0.481798715203341
1990-01-01	-0.504303388918915
1991-01-01	2.162600527134240
1992-01-01	-1.991135807368950
1993-01-01	0.553455723541903
1994-01-01	25.177876224996300
1995-01-01	7.458844978283230
1996-01-01	6.097804391217430
1997-01-01	2.318690621766840
1998-01-01	5.084333441453210
1999-01-01	-1.072613627595350
2000-01-01	-0.304212168486814
2001-01-01	5.007432908223760
2002-01-01	2.175694806646080
2003-01-01	2.034565740538150
2004-01-01	-0.400228702115457
2005-01-01	6.415040183696840
2006-01-01	2.333108563722190
2007-01-01	-0.230627306273007
2008-01-01	10.659797899742400
2009-01-01	2.608176663683150
2010-01-01	-0.764230734676734
2011-01-01	2.759767248545300
2012-01-01	3.818152402523860
2013-01-01	0.533738507090537
2014-01-01	-0.258089517535353
2015-01-01	0.954993317377910
2016-01-01	-0.244764125891864
2017-01-01	0.368047035948232