Year	Percent
1960-01-01	-1.544676806092000
1961-01-01	1.134443639799900
1962-01-01	1.503579952515500
1963-01-01	2.272905399962130
1964-01-01	3.195647176045930
1965-01-01	0.222783306253963
1966-01-01	-0.155601659973785
1967-01-01	2.189239332035100
1968-01-01	5.860566448985860
1969-01-01	7.456952733725740
1970-01-01	5.866956077659680
1971-01-01	2.665380208599960
1972-01-01	6.349486050136060
1973-01-01	9.626643101711170
1974-01-01	12.302886795247300
1975-01-01	6.625992553209820
1976-01-01	1.329518680582280
1977-01-01	1.224879588028430
1978-01-01	12.141597276466000
1979-01-01	10.731921430873000
1980-01-01	26.145410101446500
1981-01-01	17.968995496010100
1982-01-01	10.825749167568700
1983-01-01	13.964388006500000
1984-01-01	16.638253747921700
1985-01-01	1.481180122354320
1986-01-01	7.976361935706230
1987-01-01	7.717165605592680
1988-01-01	13.991548900207600
1989-01-01	11.567536089055800
1990-01-01	21.495252052759000
1991-01-01	12.185630721438900
1992-01-01	11.383437051220600
1993-01-01	11.746737017494700
1994-01-01	8.448712486983430
1995-01-01	7.674848734498100
1996-01-01	15.935831044721400
1997-01-01	9.573696264051660
1998-01-01	9.364243006832330
1999-01-01	4.691705630484320
2000-01-01	6.176275910120440
2001-01-01	14.158455799120100
2002-01-01	9.551031670072500
2003-01-01	6.314637870511730
2004-01-01	7.575925829958560
2005-01-01	11.639686097111800
2006-01-01	10.020183605703500
2007-01-01	15.842111492484300
2008-01-01	22.564495530012600
2009-01-01	3.464963221060730
2010-01-01	6.217648893046190
2011-01-01	6.716768435885400
2012-01-01	7.542913732394360
2013-01-01	6.908450348284430
2014-01-01	3.179002282360630
2015-01-01	3.768367830620940
2016-01-01	3.958888465930720
2017-01-01	7.704137678506030