Year	Percent Change at Annual Rate
1960-01-01	1.2296100371265400
1961-01-01	1.3378531166831900
1962-01-01	1.4124699585691200
1963-01-01	1.4115123036452800
1964-01-01	1.3144265343047100
1965-01-01	1.1548387228315100
1966-01-01	0.9647562823291650
1967-01-01	0.8020596440190580
1968-01-01	0.7057327886769810
1969-01-01	0.7039011026931990
1970-01-01	0.7655524181866030
1971-01-01	0.8521771924915110
1972-01-01	0.9082167775916360
1973-01-01	0.9060847160048750
1974-01-01	0.8221009279625610
1975-01-01	0.6846247376697500
1976-01-01	0.5311313147273790
1977-01-01	0.4079728488010490
1978-01-01	0.3345348552353880
1979-01-01	0.3317978589227680
1980-01-01	0.3805298010082180
1981-01-01	0.4418099632353970
1982-01-01	0.4897566422802750
1983-01-01	0.5312818295474280
1984-01-01	0.5584552005026510
1985-01-01	0.5737230696270270
1986-01-01	0.5916102586772720
1987-01-01	0.6105662018019420
1988-01-01	0.6137685458054470
1989-01-01	0.5968271863644630
1990-01-01	0.5657576379878830
1991-01-01	0.0794433428607654
1992-01-01	0.4972409313144390
1993-01-01	0.4332922435289650
1994-01-01	0.3722315027030710
1995-01-01	0.3612498954778090
1996-01-01	0.3540822707240070
1997-01-01	0.3537501586867260
1998-01-01	0.3685978386132280
1999-01-01	0.5144563347499520
2000-01-01	0.6849292538185520
2001-01-01	0.7277864048724440
2002-01-01	0.7272315150938080
2003-01-01	0.7087791990377710
2004-01-01	0.7363135407331430
2005-01-01	0.7538008316133310
2006-01-01	0.6972070012649290
2007-01-01	0.6187005001316750
2008-01-01	0.5588590013004060
2009-01-01	0.5144879186270950
2010-01-01	0.4940297697296100
2011-01-01	0.4836510433532760
2012-01-01	0.4839823116868570
2013-01-01	0.5147740245945390
2014-01-01	0.4798143883426750
2015-01-01	0.4172380301927450
2016-01-01	0.3992448073382970
2017-01-01	0.3864507879913500