Year annual % growth 1971 7.7785954887494455 1972 9.13627849348147 1973 12.720420658542551 1974 10.475847386460927 1975 7.50884969354091 1976 4.922359372266413 1977 0.6612356903259524 1978 5.179531476159568 1979 8.596625277980195 1980 1.7055196635489551 1981 4.137150372695402 1982 -11.497491253725983 1983 -18.670507785371953 1984 1.8429599946952209 1985 2.1142522311155716 1986 5.495742313781875 1987 11.459980576392553 1988 4.549345581169192 1989 6.9707551642443235 1990 -11.370895991903069 1991 -0.6989264312466332 1992 8.147575487983929 1993 6.976526006628433 1994 12.976635844283763 1995 -10.171201201014355 1996 6.4440914732513335 1997 11.48296229602495 1998 4.661612078488744 1999 -5.826953676604646 2000 3.0501982488157893 2001 -3.356145962002813 2002 -2.6721723697479973 2003 1.7521721492115319 2004 9.290442480729027 2005 6.36950590228804 2006 9.793404263840372 2007 11.219177015592052 2008 9.298054484233646 2009 -8.448892088869144 2010 13.177351954985213 2011 9.288826232568454 2012 2.6813244049407103 2013 2.6130490170185823 2014 -1.0856769571553713 2015 -3.6413143948502977 2016 -4.9293237007862984 2017 0.8594796892587908 2018 2.795390328833051 2019 -1.029213979834708 2020 -11.603967697964265 2021 15.543680847308778 2022 4.854834444837223 2023 3.241528343070172