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 -0.9267497691027984 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 2.736614261492761 2002 2.750991901030602 2003 3.23215989671462 2004 5.359700543398404 2005 4.609979814211968 2006 4.587237964557957 2007 3.7238478477651427 2008 4.752101034728028 2009 3.3388904717605215 2010 3.814172225325592 2011 4.164614948653238 2012 4.226336447639682 2013 3.629762877330009 2014 3.8483217160896572 2015 3.3227738872097348 2016 2.7032395478529594 2017 3.918033408694072 2018 3.466438004451163 2019 2.8992422041354473 2020 2.510817327609047 2021 5.744441795025423 2022 3.6695853126131226 2023 3.581890542563187