Year annual % growth 1971 4.9128504327622124 1972 8.95449722885013 1973 10.816650562388432 1974 2.789285768930057 1975 -5.231024257265474 1976 12.370806281968157 1977 2.618721231811037 1978 3.8311863901359544 1979 9.678096566633457 1980 2.9010106961507205 1981 -1.3687357575203265 1982 0.6472206954515372 1983 0.70334417358157 1984 6.014974095074038 1985 4.956337505400882 1986 4.794745388404806 1987 7.541156611395337 1988 6.612371315143562 1989 8.0227470970637 1990 4.141700117262019 1991 3.508125065640911 1992 3.8571497953157348 1993 -3.9554572754324226 1994 8.873434402790423 1995 8.522124787316471 1996 4.789331564595912 1997 10.371566653063354 1998 10.287357858727034 1999 7.257074051499089 2000 12.174581473736154 2001 2.5159010460720452 2002 1.0191707455311274 2003 3.4120414879591294 2004 7.660717743297241 2005 6.586124153261736 2006 9.257573039551033 2007 7.715433194107078 2008 1.0653364155007239 2009 -11.772929946849615 2010 9.769861521494377 2011 4.704789681429375 2012 -0.936330657768849 2013 1.4775782261899906 2014 5.239436462180834 2015 7.535480952506916 2016 4.544425274003601 2017 5.552164962547508 2018 4.231771730883736 2019 4.791653595497138 2020 -7.88112595930798 2021 9.758510352395746 2022 8.011060248275697 2023 -1.3780029922044292