Year Growth Rate Previous Period 1977-01-01 33.705614097958700 1978-01-01 22.466046162353500 1979-01-01 20.092757008926000 1980-01-01 18.279104948487300 1981-01-01 15.922039639139800 1982-01-01 16.966364372887800 1983-01-01 14.252099445275200 1984-01-01 11.995085039018000 1985-01-01 9.659012483696550 1986-01-01 11.553533495001200 1987-01-01 7.903564293789220 1988-01-01 7.697889592942870 1989-01-01 8.954718918525120 1990-01-01 9.158195605356990 1991-01-01 10.118143824564300 1992-01-01 10.701410361795500 1993-01-01 7.743536734281900 1994-01-01 5.334239308759110 1995-01-01 5.048130345663670 1996-01-01 3.104172226596830 1997-01-01 3.081539865734860 1998-01-01 3.374304064884780 1999-01-01 3.398680181876300 2000-01-01 3.753239304013590 2001-01-01 4.408955320302680 2002-01-01 4.803281485928780 2003-01-01 3.620004813712830 2004-01-01 3.656553811586040 2005-01-01 3.736743885704160 2006-01-01 3.776654792256010 2007-01-01 3.776338817944470 2008-01-01 3.853560840448940 2009-01-01 2.334278531797600 2010-01-01 1.295499490251820 2011-01-01 1.811407666554450 2012-01-01 1.637937062006850 2013-01-01 1.548963301258100 2014-01-01 0.217802885405045 2015-01-01 0.809721774352066 2016-01-01 1.169027480294140 2017-01-01 1.711195317919780