Year	Percent Change at Annual Rate
1960-01-01	1.0435988011148700
1961-01-01	0.6029644352928910
1962-01-01	0.2245934089445080
1963-01-01	0.0384214666496467
1964-01-01	0.1234717503431520
1965-01-01	0.4034179530560910
1966-01-01	0.7445969062004020
1967-01-01	1.0198827838401700
1968-01-01	1.2077796776689700
1969-01-01	1.2651608309864400
1970-01-01	1.2311036384674200
1971-01-01	1.1726529295179500
1972-01-01	1.1439348163587800
1973-01-01	1.1256435589504400
1974-01-01	1.1316414944449000
1975-01-01	1.1479167048945000
1976-01-01	1.1901104982164800
1977-01-01	1.2084236837380100
1978-01-01	1.1537506444001900
1979-01-01	0.9990757486954610
1980-01-01	0.7902388904545050
1981-01-01	0.5480964615867830
1982-01-01	0.3662898998962480
1983-01-01	0.3427678331564020
1984-01-01	0.5230671060763140
1985-01-01	0.8520078598814610
1986-01-01	1.2223074324220800
1987-01-01	1.5377942569711200
1988-01-01	1.7946050343533800
1989-01-01	1.9583516338608900
1990-01-01	2.0519176640808500
1991-01-01	2.1314018141405700
1992-01-01	2.2075254685401700
1993-01-01	2.2407320258650900
1994-01-01	2.2175475275957800
1995-01-01	2.1595007319598100
1996-01-01	2.0869483654056700
1997-01-01	2.0139917899672700
1998-01-01	1.9459516112380000
1999-01-01	1.8908820284383800
2000-01-01	1.8441295163026100
2001-01-01	1.7857467293961200
2002-01-01	1.7224859702020000
2003-01-01	1.6845621132751000
2004-01-01	1.6813995897204000
2005-01-01	1.6926237780561500
2006-01-01	1.7221421314679700
2007-01-01	1.7260829417298700
2008-01-01	1.6642539553378300
2009-01-01	1.5152340308156900
2010-01-01	1.3146352758850100
2011-01-01	1.0930448024548400
2012-01-01	0.9050916758996220
2013-01-01	0.7752704742109550
2014-01-01	0.7327775739139450
2015-01-01	0.7501027262296350
2016-01-01	0.7841797974120710
2017-01-01	0.8023276881506410