Year annual % growth 1961 8.151981114321742 1962 11.775684019435587 1963 9.947177755419204 1964 9.065640760979463 1965 9.856373732822064 1966 2.859842374581163 1967 10.886075948814607 1968 -0.44180439439094243 1969 1.5775303404221575 1970 0.8943912413093642 1971 2.047511236731083 1972 1.5355458816956684 1973 6.354434090186274 1974 7.412909098598732 1975 5.17320217694423 1976 4.640385992695656 1977 7.770689663689964 1978 -5.9945555335430925 1979 -27.11572798234502 1980 17.79491789452831 1981 -14.144321008196911 1982 -12.858684073559687 1983 -5.616376490573288 1984 -5.063729736110574 1985 -8.056344881495477 1986 -8.239608339994007 1987 -2.826301912567928 1988 43.60680064533051 1989 -5.639779536507433 1990 -15.222795097790382 1991 34.5127851654303 1992 6.644507073989331 1993 -2.9444073257827768 1994 2.3271333116694706 1995 3.629461800691473 1996 4.469004751434454 1997 5.813873595251835 1998 5.309531158820022 1999 3.4112927775556727 2000 5.791662363127941 2001 4.839780316719526 2002 4.368686754088031 2003 1.6592448400533328 2004 1.930994603681441 2005 3.395857708779218 2006 2.852170307011704 2007 4.764958369964319 2008 3.218418038936946 2009 1.6929374856530615 2010 3.0228927221083097 2011 2.6192302074203866 2012 4.075441483919761 2013 3.8303728651291493 2014 4.234071805510965 2015 5.249980254324299 2016 5.696511252692176 2017 2.6993638532318585 2018 -4.559281023159343 2019 -1.7920394045851396 2020 -0.3245292481984876 2021 8.8655552349028 2022 5.951523225622267 2023 7.264014164923864