Year annual % growth 1961 8.993902439262342 1962 10.083916084106193 1963 14.054757971395901 1964 16.073964745010812 1965 9.205633264526995 1966 -2.5945779762558345 1967 7.53772245266579 1968 -4.226179247355603 1969 14.061405053230729 1970 -7.18824998094054 1971 3.829047809592282 1972 -0.02191583976541267 1973 9.00739322932668 1974 10.147894924054768 1975 1.7559583042415596 1976 3.3844397380254065 1977 4.737713965836846 1978 6.118575650309538 1979 -15.3697657939923 1980 -19.043306164869932 1981 9.515621119353668 1982 2.8262802429613174 1983 5.767638669788823 1984 -5.3400591398090285 1985 -4.801543550438069 1986 -8.771015500261868 1987 -3.2456678507183625 1988 -10.153294412106376 1989 9.18899111078592 1990 0.20346623049800883 1991 -3.8954550132787915 1992 3.0580803516502897 1993 1.8219413488994292 1994 10.925890111296212 1995 8.67784634841189 1996 9.430622481513325 1997 -0.7704413863301625 1998 -0.26594451571469335 1999 6.068376198784691 2000 12.06422275306565 2001 2.683652270927567 2002 -0.25666164845736716 2003 1.9458961736053055 2004 5.709002195219753 2005 4.621911190989508 2006 2.4572613185436722 2007 11.764196877480828 2008 1.966142378637585 2009 0.546290421563512 2010 2.5064080074436816 2011 5.353924790606328 2012 -1.312026132599982 2013 -2.043234471294241 2014 2.112621106764351 2015 -0.6562401969523393 2016 4.845374120167037 2017 9.157134673114967 2018 1.082598011615076 2019 3.9740444610413874 2020 0.059240681568709874 2021 6.248062517086495 2022 1.6179328595846698 2023 -2.142139035763279