Year annual % growth 1971 12.590306583429992 1972 10.174151711802509 1973 22.518018073354156 1974 10.36668735927637 1975 2.953242136644633 1976 18.505975869489617 1977 10.590010513438486 1978 9.271925148440062 1979 11.336764796343886 1980 9.22039064549243 1981 4.724316832856374 1982 5.603502395172129 1983 7.8713218696853176 1984 12.292649677977877 1985 -3.825466028835905 1986 7.529075709775128 1987 13.401046316242642 1988 16.988419614654603 1989 20.32363564416559 1990 15.28932988754687 1991 13.998465461662306 1992 7.001481142359438 1993 14.580977200467643 1994 11.374684975788952 1995 11.359266032242047 1996 18.180811695609165 1997 10.116690762290673 1998 -13.41770259027129 1999 11.671901781856462 2000 18.312487781515657 2001 -4.270077573918229 2002 4.120568670804303 2003 9.163626385606634 2004 9.558264463657196 2005 5.195726237253396 2006 7.4295178243113185 2007 9.010695559959629 2008 -0.7070072552966735 2009 -8.315857139183436 2010 6.642712065890336 2011 5.437600358756441 2012 4.415155677966752 2013 3.4121205714955067 2014 6.103070024008602 2015 4.806323553057524 2016 4.390595283921357 2017 6.0478497548366335 2018 4.950355293599216 2019 3.7527514163028286 2020 -2.743429144152543 2021 9.503390701091647 2022 8.102387193881938 2023 0.7062526947719334