Year annual % growth 1961 5.208136665940799 1962 5.246177197929683 1963 -3.364688931929507 1964 9.538324060664749 1965 -1.0664461853606753 1966 2.5904944000188834 1967 -2.693533640689054 1968 10.27067214340498 1969 0.972407134788611 1970 5.42276930073389 1971 -4.508098223256042 1972 -10.706606260000555 1973 0.2728717687740385 1974 6.438208426556869 1975 -4.563524651791923 1976 8.387863927206098 1977 -3.6582420806975335 1978 7.834220163794953 1979 -0.6648070577021059 1980 -1.5182051023291478 1981 3.303884671696622 1982 1.0237371897087826 1983 3.8897434514778126 1984 4.905098749411479 1985 0.1904308212552479 1986 3.325031423725534 1987 0.09503340541121474 1988 -0.4360443826540603 1989 -0.17702726230281485 1990 9.211673781356538 1991 2.1291532357396505 1992 2.3233511165242646 1993 2.389076738914625 1994 0.7370083919328891 1995 -0.37249900708982864 1996 2.967581282707627 1997 4.518572146883429 1998 3.9354091403295257 1999 3.8815416633058533 2000 7.390266091898894 2001 2.7579268233725713 2002 -0.11890113908698652 2003 3.9838511208543252 2004 4.973513595708894 2005 4.382454979177112 2006 5.552717783176874 2007 6.692496276963084 2008 4.493867872286074 2009 3.4660884708641646 2010 6.151947120835473 2011 4.456368993874889 2012 3.014271412789853 2013 2.4648875359992957 2014 4.371870052559416 2015 3.328381062684187 2016 2.786267951418253 2017 3.1960072270621254 2018 3.5445399011226044 2019 3.2605776835202818 2020 3.420947931565493 2021 3.1745718217363788 2022 3.0539505535813305 2023 3.3714392206772033