Year annual % growth 1966 6.624469558282556 1967 4.829084683781602 1968 8.394340241010596 1969 8.987605587101697 1970 6.276338172440731 1971 6.940737564239981 1972 8.88480066373154 1973 10.038424854067244 1974 6.449780480885181 1975 2.711050901333678 1976 5.895082149669889 1977 3.619479231147565 1978 3.9969160319797794 1979 7.558941831072687 1980 5.614021959441743 1981 -3.4488935681647064 1982 -1.5496732410661451 1983 -4.284929645603668 1984 4.928628503365999 1985 4.172054568411568 1986 4.489189262431694 1987 2.172311437817598 1988 -1.0515963617207689 1989 2.365655934509732 1990 -1.8567990840670916 1991 2.499382299180567 1992 1.0438546194342848 1993 3.0854936431095723 1994 4.774307538733382 1995 -1.6442095218913408 1996 4.018491231666928 1997 6.202448044494929 1998 2.1189638072760033 1999 -1.1250249583433742 2000 5.39261426480617 2001 -1.2281129972811016 2002 -1.216480094691292 2003 2.721775336940297 2004 6.236391473919795 2005 3.256208454258754 2006 4.265121076199293 2007 4.138350524683716 2008 2.0167556615238453 2009 -8.282532024346452 2010 7.811856612880391 2011 3.9372526796441605 2012 0.8027174099281638 2013 1.586781086437 2014 -0.5721913884209187 2015 -0.9314063513115087 2016 -1.4308623148897368 2017 2.2154228548363193 2018 0.9218408687360835 2019 -0.7620057385275203 2020 -7.430678765090178 2021 8.866510784599967 2022 3.69814614206075 2023 -0.7061259438877698