Year	Percent
1960-01-01	3.57451152535917000
1961-01-01	5.36846178480054000
1962-01-01	6.83544034819730000
1963-01-01	6.70690556397994000
1964-01-01	3.80038945305748000
1965-01-01	6.65599094260623000
1966-01-01	5.04083205887675000
1967-01-01	3.98984808881514000
1968-01-01	5.33943295739348000
1969-01-01	5.24982091102023000
1970-01-01	6.92417383485780000
1971-01-01	6.39534883720932000
1972-01-01	4.84351713859910000
1973-01-01	11.60862354892200000
1974-01-01	23.22224580768420000
1975-01-01	11.73126614987080000
1976-01-01	9.37403638606229000
1977-01-01	8.16182689596844000
1978-01-01	4.20956601068683000
1979-01-01	3.70185092546270000
1980-01-01	7.77858176555715000
1981-01-01	4.91216291820523000
1982-01-01	2.74104095563142000
1983-01-01	1.89971971348489000
1984-01-01	2.26161369193154000
1985-01-01	2.03227734608488000
1986-01-01	0.59558679945321300
1987-01-01	0.12617684169661800
1988-01-01	0.67855758045750100
1989-01-01	2.27228962064320000
1990-01-01	3.07851628695162000
1991-01-01	3.25143848753310000
1992-01-01	1.76028306059265000
1993-01-01	1.24304589707929000
1994-01-01	0.69545805786897300
1995-01-01	-0.12789904502046400
1996-01-01	0.13660035857593800
1997-01-01	1.74780458692133000
1998-01-01	0.66197419138591600
1999-01-01	-0.34129692832762000
2000-01-01	-0.67657868359506300
2001-01-01	-0.74005550416280800
2002-01-01	-0.92349402694229100
2003-01-01	-0.25654181631607400
2004-01-01	-0.00857338820299998
2005-01-01	-0.28294606876448700
2006-01-01	0.24935511607909600
2007-01-01	0.06003945449868680
2008-01-01	1.38007886164923000
2009-01-01	-1.35283672951722000
2010-01-01	-0.71997942915914900
2011-01-01	-0.26763360096694600
2012-01-01	-0.05193905817173680
2013-01-01	0.34644032565389800
2014-01-01	2.76195408251338000
2015-01-01	0.78951789013942700
2016-01-01	-0.11666666666667100
2017-01-01	0.46721174703821400