Year annual % growth 1971 8.618865011016823 1972 4.81179948370945 1973 3.367498849760466 1974 0.9111467778072608 1975 9.734159323993325 1976 5.5097141155995075 1977 8.44212935894953 1978 6.257232431579666 1979 0.9748578903463283 1980 -3.153460919013412 1981 18.849499445217873 1982 6.89678290134988 1983 4.692092881178311 1984 8.940345414173706 1985 13.096596425362833 1986 -11.833669049433823 1987 -10.097652090393723 1988 9.845158925331845 1989 10.119924252168104 1990 -3.6320217501832985 1991 -20.545609760287775 1992 -41.26659402335498 1993 -28.855466798391944 1994 -27.64242015335796 1995 4.803166404184495 1996 37.06591012250715 1997 5.713271823988634 1998 4.263175562269225 1999 5.730843528654233 2000 9.567603532277701 2001 -2.837532576356722 2002 -8.92995051628958 2003 -6.64279657024403 2004 7.219755080069973 2005 20.586758707248194 2006 44.11022351747286 2007 2.414098188974961 2008 7.612834978843438 2009 -6.3206527081490265 2010 -2.990556138509973 2011 4.885523706508039 2012 6.015812994156079 2013 6.274319066147854 2014 -2.6849733028222715 2015 15.62940899827558 2016 6.507592190889369 2017 3.3477596741344087 2018 6.256928193127237 2019 -0.4057030253854208 2020 -3.8640595903165718 2021 0.09685230024211933 2022 -5.757135945815193