Year annual % growth 1966 8.436086489099907 1967 5.037354293560497 1968 1.00371159938976 1969 2.9848285267087533 1970 6.04292468102598 1971 1.9389344951233483 1972 5.818138195985739 1973 7.578720229021059 1974 1.0796837984800902 1975 1.228786726302772 1976 11.797465738301256 1977 11.70918448803846 1978 2.2521018710628766 1979 -8.799656133361708 1980 -10.828280735238891 1981 -9.124949359061631 1982 -7.899547714879603 1983 1.3503463830627993 1984 3.0213648662248147 1985 2.6525409800877355 1986 0.022224133891540987 1987 0.9032139653073301 1988 1.6211979057372332 1989 1.3007222793617785 1990 14.959354897914295 1991 0.9192792883766003 1992 7.019814475554469 1993 5.402420287079465 1994 5.965849324310412 1995 6.420991313848816 1996 2.049528916574644 1997 1.6396301589553417 1998 -0.3881899808137348 1999 2.531800377619021 2000 2.2709431156945357 2001 1.9478415013050636 2002 0.9737519213770724 2003 0.8919515532458462 2004 1.7708778759620998 2005 3.8947679710032617 2006 4.515273269125132 2007 6.079671540991555 2008 0.4572605712365885 2009 -5.676718206012126 2010 1.17908927656147 2011 2.9956130523485456 2012 3.0078169448776606 2013 3.3678755140515335 2014 -0.2893657257040019 2015 2.8400000000000034 2016 1.478024115130296 2017 1.4085856650057451 2018 1.39846924312576 2019 1.491007361848844 2020 -5.362225690937478 2021 9.440186281168138 2022 1.799645390070907 2023 3.3789079508839137