Year annual % growth 1961 1.6634980963402484 1962 3.2725572694668728 1963 -3.712086917732421 1964 9.826046077665723 1965 -3.5530821926532923 1966 4.793608520618918 1967 -1.6941973738461371 1968 9.952606634610063 1969 1.9200626953776379 1970 4.075355634390505 1971 3.804950130009786 1972 2.1352313165021997 1973 5.574912891414002 1974 3.7269372678185704 1975 0.007114904957731483 1976 4.7132896990729165 1977 1.2773040750910383 1978 5.148760605752997 1979 3.8535153761700087 1980 5.200270303113427 1981 4.922771468381043 1982 2.123278142237922 1983 4.790451794130163 1984 4.210034507358486 1985 4.25331936066442 1986 2.586010362592276 1987 2.1435317773031954 1988 4.896284024580908 1989 3.3190815372585973 1990 2.0033945020762047 1991 1.3695995414900324 1992 6.894025972801288 1993 1.419165754694646 1994 0.5559380906811953 1995 4.37501686552433 1996 3.1390380902106756 1997 1.0028545546439744 1998 -1.3315153733778118 1999 2.1628844741919124 2000 1.882810420064061 2001 3.2559844857157145 2002 3.4489920335094553 2003 3.788121159688359 2004 2.818909318513988 2005 2.718078228518479 2006 3.3563269815872587 2007 3.4704279070413264 2008 4.828490220894352 2009 3.9578159022568116 2010 3.0056731730775397 2011 3.946953503834294 2012 4.58651357694913 2013 4.204289864732075 2014 4.238678629150854 2015 3.754749446150754 2016 3.372729664488091 2017 3.915932501235588 2018 3.8841579664960193 2019 3.6065015723811626 2020 1.771988773471577 2021 1.8711564555079008 2022 2.254842984668244 2023 1.3047085872009774