Year annual % growth 1971 -3.650403635542645 1972 3.419558764490475 1973 13.88178575760135 1974 -14.386856124770247 1975 -5.407826610830142 1976 11.240222665756576 1977 -0.43564310628040914 1978 10.499112955191862 1979 4.749882643023668 1980 3.099394187320101 1981 -7.1845736764408485 1982 1.8956311548908928 1983 0 1984 19.080660144336875 1985 9.322651082834781 1986 5.129916549025964 1987 -7.604563753783339 1988 14.197533482542852 1989 7.840535777029103 1990 2.5261037297533875 1991 8.092227706460193 1992 0.668935881512084 1993 10.126930976100951 1994 3.2827374880332485 1995 5.766855549451904 1996 5.60357179994358 1997 6.083006752761392 1998 5.246946549090879 1999 5.982777428264384 2000 4.570041300937831 2001 8.74080530160822 2002 3.037345065464251 2003 1.7739885597203084 2004 7.118103039707037 2005 1.426646302700945 2006 7.067705607612339 2007 6.03157949139927 2008 2.0955690772555045 2009 7.7823524832687525 2010 -0.8338778557617985 2011 0.9518949108689156 2012 5.4444408498339385 2013 6.1095239574537885 2014 8.257282707352687 2015 0.022744418812919776 2016 8.966194504004093 2017 7.564112603053431 2018 7.329068917347996 2019 5.159579593200931 2020 1.7533296607470845 2021 5.197477597977908 2022 4.8234960918466925 2023 5.075187186758413