Year annual % growth 1961 -1.094078152476385 1962 8.758123127926638 1963 8.765874484802566 1964 26.80998269630166 1965 -4.234595959038984 1966 27.204892264726595 1967 -6.496507835567584 1968 -1.047852127671291 1969 1.3489780579047306 1970 15.712764238196456 1971 2.622646158698842 1972 17.45222505296759 1973 6.303387756585678 1974 -15.028281982792507 1975 11.315367741565368 1976 8.376050186848133 1977 2.8593979030114554 1978 7.577686895297404 1979 -0.3126218663454523 1980 5.839389319576924 1981 6.053559707967665 1982 8.728249012590112 1983 18.032784899094963 1984 12.202384463981232 1985 6.756558827928231 1986 10.028297061634703 1987 13.239656132586376 1988 4.357621238883496 1989 20.40765775135273 1990 -3.1681643660056835 1991 -0.5007914300241083 1992 -7.868407422256439 1993 17.757875749329173 1994 -10.21311888200637 1995 5.465875433669638 1996 6.80522566636877 1997 -8.355109523259557 1998 6.819043564639543 1999 -6.924704334427673 2000 7.520746908815994 2001 -8.333933396258857 2002 13.671474986146876 2003 5.145372364931333 2004 13.985834281701457 2005 1.299902133327251 2006 31.065201026413092 2007 -5.732871341981578 2008 6.8503498430707594 2009 12.516586285977098 2010 -3.0660988833633382 2011 -1.9851622123981087 2012 1.7899844154862592 2013 6.516315508970138 2014 0.3086901764068415 2015 1.854025362925313 2016 13.88124786377493 2017 4.48783421558818 2018 5.486887452123909 2019 -1.5769987006864454 2020 8.509275706331692 2021 1.8168853966478196 2022 -1.329947233341727 2023 -4.881170235522603