Year	Growth Rate Previous Period
1971-01-01	11.972570922966300
1972-01-01	12.881467716976100
1973-01-01	20.032367164509700
1974-01-01	39.679977097286000
1975-01-01	39.306734224561100
1976-01-01	31.310865267313500
1977-01-01	34.616716871162500
1978-01-01	50.550938232593200
1979-01-01	78.310024532916600
1980-01-01	131.024998340780000
1981-01-01	116.800007902863000
1982-01-01	120.364391998424000
1983-01-01	145.951508617060000
1984-01-01	373.215653839258000
1985-01-01	304.584168188521000
1986-01-01	48.133333299364700
1987-01-01	19.852610267990900
1988-01-01	16.258333357201000
1989-01-01	20.249444430677200
1990-01-01	17.173342970624300
1991-01-01	19.005952073022200
1992-01-01	11.948018631667000
1993-01-01	10.943943768230500
1994-01-01	12.349999982403900
1995-01-01	10.043020349016900
1996-01-01	11.276624410816100
1997-01-01	9.001150872129290
1998-01-01	5.434843028750130
1999-01-01	5.199999995436600
2000-01-01	1.124841581772670
2001-01-01	1.100000000809790
2002-01-01	5.687438182193100
2003-01-01	0.716666681009610
2004-01-01	-0.413701822365459
2005-01-01	1.329345300359290
2006-01-01	2.107248291506480
2007-01-01	0.491666662497126
2008-01-01	4.594079101063810
2009-01-01	3.325000000049300
2010-01-01	2.693765636980020
2011-01-01	3.458333336504130
2012-01-01	1.707611723024160
2013-01-01	1.550000126100840
2014-01-01	0.475955840152706
2015-01-01	-0.599999935385330
2016-01-01	-0.544936346826162
2017-01-01	0.242232227861504