Year	Growth Rate Previous Period
1971-01-01	20.052238805970100
1972-01-01	77.795735687200800
1973-01-01	352.810992238305000
1974-01-01	504.738520457406000
1975-01-01	374.735289799097000
1976-01-01	211.924297737775000
1977-01-01	91.954130220970700
1978-01-01	40.087228143094000
1979-01-01	33.389207579906900
1980-01-01	35.138348260201800
1981-01-01	19.686834218186000
1982-01-01	9.941022174412240
1983-01-01	27.257197268801100
1984-01-01	19.860207322387500
1985-01-01	30.703494395185200
1986-01-01	19.476865908828400
1987-01-01	19.880808706133800
1988-01-01	14.684358519970200
1989-01-01	17.027941120585400
1990-01-01	26.036478208631000
1991-01-01	21.784419909603600
1992-01-01	15.425803278839200
1993-01-01	12.727761407979600
1994-01-01	11.443124358673200
1995-01-01	8.232633545747170
1996-01-01	7.359114663027540
1997-01-01	6.133866515368080
1998-01-01	5.110244133120520
1999-01-01	3.336882861889940
2000-01-01	3.843273472835640
2001-01-01	3.569101133836420
2002-01-01	2.489398331234090
2003-01-01	2.810177259481480
2004-01-01	1.054739332287290
2005-01-01	3.052573943407290
2006-01-01	3.392018991136050
2007-01-01	4.407797904502210
2008-01-01	8.716268547771490
2009-01-01	0.353046731830987
2010-01-01	1.410809819836330
2011-01-01	3.340318008135090
2012-01-01	3.006520356234090
2013-01-01	1.928219599552500
2014-01-01	4.395000000000000
2015-01-01	4.348867282915860
2016-01-01	3.786661770780730
2017-01-01	2.182469485229110