Year	Growth Rate Previous Period
1971-01-01	11.67350024372250000
1972-01-01	14.63182397814450000
1973-01-01	20.16953828722100000
1974-01-01	36.34480092283780000
1975-01-01	36.15066864035840000
1976-01-01	32.30909538928650000
1977-01-01	32.39167899695400000
1978-01-01	52.21879374120460000
1979-01-01	78.14994576922020000
1980-01-01	114.95288607779000000
1981-01-01	125.13333088242700000
1982-01-01	121.61311553199000000
1983-01-01	145.39426606295600000
1984-01-01	371.93846876642400000
1985-01-01	297.24707665544700000
1986-01-01	49.04166680500310000
1987-01-01	22.63908295523760000
1988-01-01	16.50000004936710000
1989-01-01	19.73533616397910000
1990-01-01	19.15885054281580000
1991-01-01	20.29980953432410000
1992-01-01	11.76495101075350000
1993-01-01	12.42076215580720000
1994-01-01	12.73333336298260000
1995-01-01	10.71111770025110000
1996-01-01	11.26393800419960000
1997-01-01	8.78540568871810000
1998-01-01	5.48874668694985000
1999-01-01	4.70833330165917000
2000-01-01	0.38201353880350300
2001-01-01	1.05000001667474000
2002-01-01	5.95414811490830000
2003-01-01	-0.28333333824427900
2004-01-01	-0.90255726641108700
2005-01-01	0.06746502060493460
2006-01-01	1.28097083775686000
2007-01-01	-0.16666666564105200
2008-01-01	2.47913189027527000
2009-01-01	4.66666667054938000
2010-01-01	2.60350317482660000
2011-01-01	3.03333331874692000
2012-01-01	1.33451959728177000
2013-01-01	0.90833336165620000
2014-01-01	0.85886531723309400
2015-01-01	0.37730624527914500
2016-01-01	0.04050624741194820
2017-01-01	-0.00908759888327841