Year annual % growth 1961 -19.040000000923555 1962 62.05533597026957 1963 1.4925373135123294 1964 5.330882348497639 1965 19.022687617353156 1966 4.252199410666208 1967 -6.540084384712387 1968 38.14898419470802 1969 -6.045751635338661 1970 2.260869562534751 1971 12.14162942789487 1972 33.394641652754785 1973 -16.476698224668894 1974 -14.901227093656544 1975 63.743937919486115 1976 -19.02618173121347 1977 8.441843451229445 1978 29.79402770225863 1979 -12.924015106136295 1980 -28.144505565635086 1981 -0.7814578547604043 1982 -23.510986021030206 1983 -11.139619481622546 1984 39.29432947866738 1985 26.82313212782293 1986 -30.499860476888244 1987 17.515450060494757 1988 3.8308707966290427 1989 -15.120016551413826 1990 17.684180139817116 1991 29.28702760772947 1992 5.322728152162298 1993 -0.06912674708016198 1994 -10.602318815572872 1995 12.30875087426169 1996 18.787678177640643 1997 30.23352574654311 1998 28.510085450092788 1999 -18.76211034264496 2000 -7.377376429661965 2001 -17.469136329971363 2002 17.861235692652073 2003 -12.82780903312522 2004 -11.84494324868517 2005 26.865588245779207 2006 -5.09007819860345 2007 11.056481944865482 2008 29.313336886241274 2009 3.878754235703454 2010 7.147021169908157 2011 25.851643917213266 2012 -6.60992856264339 2013 16.04455820434056 2014 12.510039961679183 2015 0.8158768793729223 2016 9.862040028780655 2017 15.852615940955303 2018 -0.45029237151248935 2019 0.5848319952801262 2020 -25.537091256725432 2021 11.538527879242835 2022 -2.388324974175177