Year annual % growth 1961 1.8374873846963737 1962 4.484293053008443 1963 8.599843514872731 1964 10.94172636933564 1965 7.410321263607543 1966 7.13190718401728 1967 1.1666633803817774 1968 0.8523676576448054 1969 1.5527717870680107 1970 6.574044170902553 1971 2.3670987651062774 1972 -0.030133480800884627 1973 8.618766709957299 1974 3.663049215670995 1975 1.712254996334579 1976 0.5599134707276789 1977 -0.9267497691027842 1978 1.0756466507014295 1979 4.969124011398634 1980 0.03700753562955583 1981 6.431087919744755 1982 8.714976586516386 1983 6.619756248460192 1984 10.182947225268421 1985 2.172397130422013 1986 3.067170733464735 1987 3.875982012784675 1988 3.38381189312031 1989 3.736102751262621 1990 5.0732921103300725 1991 2.469102698716881 1992 4.871626481841318 1993 0.6934642580548314 1994 2.891579745636321 1995 4.370251672966319 1996 4.745972029021985 1997 2.929619592733218 1998 2.32425142505528 1999 2.9874905673289476 2000 2.627044756717112 2001 2.7365634515136463 2002 2.751006694321106 2003 3.232137527109714 2004 5.35967382165407 2005 4.610077290151764 2006 4.587278312136007 2007 3.7236568343050607 2008 4.752072232120042 2009 3.3387429871804386 2010 3.814071700280323 2011 4.164545533499833 2012 4.2262649629810625 2013 3.6297705625395054 2014 3.848231088437487 2015 3.322702154429294 2016 2.703273833063818 2017 3.9180898052158852 2018 3.4663790748031857 2019 2.8991791467496455 2020 2.5107309084535956 2021 5.7443847142971265 2022 3.6695674561153027 2023 3.581890542563187