Year annual % growth 1966 7.416224129312269 1967 5.886220823051076 1968 7.928425216117475 1969 7.04084286734512 1970 7.330848761852465 1971 2.882077451774066 1972 8.60865064668748 1973 9.068378459675458 1974 5.053565907758539 1975 4.155336156335949 1976 4.427153240460839 1977 2.900147178492432 1978 9.757445697340799 1979 10.217747928767551 1980 5.816312560803993 1981 6.618379038430078 1982 -2.8149568509786604 1983 -8.420199823630767 1984 5.073956724344299 1985 6.52667582536013 1986 -5.559241329082354 1987 2.556944730253747 1988 3.5104355219573335 1989 7.8943667780171864 1990 6.765480820072867 1991 3.4319625487658953 1992 4.162892716779936 1993 -0.674433174823335 1994 3.3022678535638192 1995 -6.145397020148408 1996 8.624855926574241 1997 10.648595231629258 1998 9.585200849549196 1999 2.044684384944901 2000 7.398460765078369 2001 -2.0739917973985484 2002 -3.0072922372424387 2003 -0.21779406299475568 2004 2.5114422943389485 2005 2.208683879649982 2006 5.100897632043868 2007 0.32782221846514403 2008 -1.5797696395050735 2009 -10.392994302051065 2010 7.469536632436146 2011 3.328146109042393 2012 4.8096970128944605 2013 -0.4638856292812079 2014 3.9712880870109757 2015 3.4369616637925304 2016 0.9089433534703346 2017 2.566923530237247 2018 1.3559118514613573 2019 0.20017658271798666 2020 -8.960269022337513 2021 9.30659276637293 2022 6.335784763512137 2023 0.8527406758046823