Year annual % growth 1977 9.402654938444982 1978 1.449275412876716 1979 0 1980 -9.202657723552903 1981 -9.915843582376354 1982 -8.001624760889968 1983 3.0039258220749616 1984 8.997514549035103 1985 6.886591406691167 1986 28.004551520699636 1987 35.499999815954595 1988 19.89961043055129 1989 1.4982924136303097 1990 11.304678154095598 1991 -1.6230319096102903 1992 2.7880867746694804 1993 7.330434443248549 1994 5.953829546023087 1995 -2.691461875964791 1996 11.186094425955972 1997 9.705663277981529 1998 7.253455161594388 1999 4.747123184291908 2000 -2.038263945482157 2001 2.83945701593899 2002 -3.1632286730133643 2003 -5.07560090495241 2004 5.616897735034016 2005 10.04096634526563 2006 12.589560055579668 2007 2.667384469242677 2008 1.3926289907573874 2009 -10.9240160940641 2010 9.230019656006164 2011 6.228937210079465 2012 1.3794774068136064 2013 -0.5255778418624715 2014 3.5519966997117365 2015 8.554969580637689 2016 2.6289230245815958 2017 2.2026339935003847 2018 -0.2229652160304596 2019 1.5992429017948666 2020 -28.628011050425513 2021 7.302323959108662 2022 10.158220629570721 2023 1.8023867395827011