Year annual % growth 1969 -1.2196875996493617 1970 2.835119908854608 1971 5.174416895239403 1972 1.1443476673890416 1973 -7.755842343486123 1974 6.298737661351055 1975 3.1320212924940165 1976 6.981085096500323 1977 -1.8519255171880786 1978 2.7791044287340156 1979 -0.04203261365006483 1980 1.1280425090122321 1981 -1.880336762428115 1982 3.1268632663197025 1983 -0.9325547174509126 1984 0.47824337973405306 1985 -0.4557140267480406 1986 4.618663497345324 1987 0.4497411405132823 1988 7.827394005544846 1989 -7.5521010077313235 1990 6.815536263626498 1991 -0.9025305992584691 1992 4.286637762190921 1993 -1.2838356659580796 1994 -0.7242010961542746 1995 1.9639806784898184 1996 4.400063596054849 1997 -2.3373436125099687 1998 8.369277555524278 1999 -4.561268986499286 2000 6.409229452214674 2001 -8.888652890055383 2002 8.680289314428393 2003 -1.5264008375834663 2004 3.9529633210122768 2005 7.93052155022265 2006 1.5494770536858908 2007 -6.218355592415961 2008 4.525029236131786 2009 4.128172829387893 2010 7.669955294978067 2011 3.439760036786879 2012 2.1953992414489534 2013 2.368117531348929 2014 0.5480101859518101 2015 9.256697117337055 2016 -2.593557946965845 2017 4.919163802141384 2018 2.301302052718654 2019 2.9949851932617833 2020 5.808655293855523 2021 -3.040474053881809 2022 1.2706874002662545 2023 -0.22192560991756238