Year annual % growth 1968 9.801492533691317 1969 5.995002432423988 1970 3.8183362446733753 1971 6.330823805856809 1972 5.262317829275958 1973 8.355541183619536 1974 3.414606855297748 1975 -0.7240530903886793 1976 3.430783673644086 1977 3.5860869503815564 1978 1.3959440088719361 1979 10.88932974222105 1980 5.580504471195468 1981 8.661625901729181 1982 3.1645619042161 1983 4.596210256246167 1984 3.298075925288586 1985 6.036503893593206 1986 1.3393296957199965 1987 4.857489531074151 1988 9.142061249352196 1989 4.657820533412021 1990 6.526650801670385 1991 6.168864122596432 1992 0.27081715793440253 1993 1.229240183628022 1994 8.235619670465596 1995 2.71747310737463 1996 4.661446801786056 1997 4.509899550679435 1998 4.102225483999106 1999 11.275586909389986 2000 12.612937995196361 2001 3.3579239887642274 2002 4.352310376600087 2003 -1.2087825555478275 2004 3.0253786869088373 2005 7.820181002886443 2006 10.337621460829396 2007 3.653556938545165 2008 3.872017151045327 2009 -9.224390014547453 2010 2.9401345663570737 2011 7.194875947783871 2012 1.1622057000831632 2013 1.6114001266527112 2014 3.128853090415575 2015 3.5773705342873257 2016 4.111477232146669 2017 4.813618338862071 2018 3.3524755027000595 2019 4.51101804426672 2020 -6.104566548520367 2021 7.671364090837599 2022 10.84299483547953 2023 13.416264757062308