Year annual % growth 1971 5.380333230940337 1972 10.035211901308159 1973 8.39999915770882 1974 7.623617140153698 1975 -0.013715356762119768 1976 4.91306010612864 1977 5.069273016337945 1978 8.503297165898232 1979 7.999697151961186 1980 -3.673795541052101 1981 13.035255550967122 1982 8.186913236204347 1983 8.718412166637776 1984 -6.856164836667858 1985 1.284397034206819 1986 15.088938716782835 1987 8.902987798159216 1988 4.68038467366884 1989 0.5494731612487556 1990 5.968576058872216 1991 7.249220213038882 1992 7.580275731655803 1993 7.2053468335240325 1994 9.559007492132054 1995 8.440110701378217 1996 5.90285003126769 1997 4.023069834924925 1998 5.794230247657481 1999 4.268979860918122 2000 8.300049997053634 2001 3.8961999643558443 2002 1.554260112476257 2003 0.2488999105880083 2004 5.223960129444464 2005 3.42923996593116 2006 5.171429934453627 2007 7.488779990003124 2008 2.163160071937753 2009 1.056210041700112 2010 4.827309920511709 2011 4.284139996599691 2012 2.6662899627058607 2013 3.272830011482469 2014 3.95403009029323 2015 3.681329928764171 2016 6.128919607325329 2017 3.5514300256556055 2018 3.5653500130229645 2019 4.007739938095753 2020 -7.40171993640746 2021 11.463849963051103 2022 7.412729937649388 2023 -0.7329999153049158