Year	Percent
1960-01-01	7.389937107034850
1961-01-01	-0.146412882872032
1962-01-01	-1.612903227272560
1963-01-01	-2.682563338341010
1964-01-01	-0.459418068919956
1965-01-01	17.692307692307500
1966-01-01	25.490196078431900
1967-01-01	0.833333332291589
1968-01-01	2.376033057875570
1969-01-01	-4.339051463212130
1970-01-01	-4.008438817552760
1971-01-01	2.087912087911870
1972-01-01	7.642626480085920
1973-01-01	25.199999999250200
1974-01-01	25.211661342203800
1975-01-01	31.655662934801400
1976-01-01	22.384401699229200
1977-01-01	-1.156687242528650
1978-01-01	-6.044706125702640
1979-01-01	5.672295028878250
1980-01-01	0.608153083899621
1981-01-01	0.318444733265908
1982-01-01	5.304740405379960
1983-01-01	5.650083363454370
1984-01-01	4.846311547690510
1985-01-01	6.807566557683360
1986-01-01	9.325461900076510
1987-01-01	24.759999999999900
1988-01-01	16.042802180185500
1989-01-01	27.198526449088800
1990-01-01	17.626775031450400
1991-01-01	32.272038286641600
1992-01-01	21.913210400791300
1993-01-01	31.831606872760000
1994-01-01	24.098786075701900
1995-01-01	25.194712397284700
1996-01-01	16.275396637737400
1997-01-01	29.697232579152900
1998-01-01	51.487549750407900
1999-01-01	18.401043374160900
2000-01-01	-0.109165514668500
2001-01-01	21.101305376922900
2002-01-01	57.074511262170300
2003-01-01	36.589717532392400
2004-01-01	4.534213741296940
2005-01-01	9.368618141967040
2006-01-01	19.996487335921500
2007-01-01	35.024597071769800
2008-01-01	26.799537193402200
2009-01-01	1.472343113856470
2010-01-01	7.718381958736140
2011-01-01	5.021460146207300
2012-01-01	1.467583226746710
2013-01-01	5.483386189188770
2014-01-01	5.046410888458000
2015-01-01	9.485472554502580
2016-01-01	6.964739176874510
2017-01-01	4.572727330733690