Year annual % growth 1976 39.466084564858704 1977 27.57371932543616 1978 5.616385150599797 1979 16.778650639865916 1980 5.786624827803195 1981 2.5019374147793485 1982 12.795627849861475 1983 5.51075780337635 1984 16.36942512067617 1985 -4.542966786020671 1986 -10.951839589766351 1987 14.217643082530415 1988 13.23712500562499 1989 20.08363889046801 1990 5.721396922693216 1991 1.976459242631151 1992 18.435639358391214 1993 -18.39080616845773 1994 7.105907874310759 1995 18.384696554508693 1996 5.878305939462194 1997 1.0413812403292155 1998 1.0343647476559283 1999 2.9084474840144026 2000 9.370466779677315 2001 0.2979976048402193 2002 -0.9970599661436665 2003 -0.49863113112532176 2004 7.403033335647649 2005 1.0022930013940936 2006 5.7024356074699085 2007 9.608805883854373 2008 12.983678309888916 2009 -15.324228873715342 2010 10.796359355664677 2011 -2.592036801384694 2012 -3.6333328409471193 2013 -4.555730348483678 2014 7.718816783790118 2015 8.062279285860072 2016 10.164091787081972 2017 14.302377377172903 2018 4.325012871067898 2019 9.50279832919972 2020 3.245530983665205 2021 15.364294252691764 2022 18.281979055923728 2023 1.7160443638988028