Year annual % growth 1961 0.2002233710885548 1962 5.699872063675244 1963 7.100133366554687 1964 9.700214223128427 1965 11.299861282196204 1966 4.300137105382291 1967 2.4999773172717425 1968 8.299969347768894 1969 12.900030211225172 1970 10.399857634649237 1971 -3.3000166379163574 1972 3.99991846030494 1973 6.900144364639459 1974 9.900124869918201 1975 -3.500012362753097 1976 8.99997978706837 1977 -3.8000444525839896 1978 -5.499936883058723 1979 11.599949942353021 1980 0.39987816412325117 1981 -3.8505249214063326 1982 4.7349701222218386 1983 1.018015690783571 1984 5.303283423888885 1985 7.871847115945926 1986 3.564836673445157 1987 7.3387017582267475 1988 5.019451493142427 1989 7.708434365527154 1990 1.1303530989996204 1991 -4.899776114271731 1992 1.6432008780999894 1993 -2.729283836008065 1994 12.867762993987569 1995 7.218041630970845 1996 3.4317790485404345 1997 12.317502119195538 1998 10.92950282925571 1999 5.409001484718786 2000 12.246061623509846 2001 -1.4391709046136185 2002 -1.0314799202943021 2003 3.14585706915193 2004 6.836703667138394 2005 6.839906467021905 2006 8.329763732139313 2007 8.02662106871341 2008 3.05572299948993 2009 -14.53530544238835 2010 11.483403581878122 2011 7.083975801460369 2012 1.0138907170934743 2013 -0.19983000228207004 2014 6.383569597365792 2015 6.060830726500967 2016 4.469800124298189 2017 4.728780679805439 2018 3.82384570822029 2019 2.129053610305263 2020 -6.0488389273401 2021 11.580776941815586 2022 9.588771802378233 2023 -0.9260071374391146