Year annual % growth 1961 -1.012658985401913 1962 -8.439894168174305 1963 -8.938546673051235 1964 1.8404840309396633 1965 0.3012075919573789 1966 -8.233334274397691 1967 -4.413429918372671 1968 13.457271273120355 1969 12.248483418878237 1970 5.216007732109233 1971 -1.196620520613763 1972 -0.8201630838943572 1973 -1.8685945204082657 1974 -3.459651580438745 1975 1.618300586524171 1976 18.089314014130494 1977 -12.879380313967232 1978 12.624055797089028 1979 -11.64285712032553 1980 20.146364312830457 1981 19.455343821969763 1982 47.199378635532014 1983 -17.064427117388377 1984 7.1879553430371175 1985 3.8060715750504244 1986 -6.805761689760061 1987 1.3278191121669352 1988 0.3549779632765677 1989 0.4090210632135154 1990 -6.669782314580345 1991 15.371906113715283 1992 -22.521274732718567 1993 13.847168353764317 1994 19.284986753125736 1995 18.79348405031334 1996 14.307422617994206 1997 -1.1605346436672903 1998 -43.80421741438053 1999 92.51274984824224 2000 -2.526831907955753 2001 22.524686676189233 2002 -26.072823389289397 2003 11.578521134195057 2004 7.4282430369495955 2005 16.068848921361024 2006 6.579262314851931 2007 7.533729297028273 2008 9.036102980123388 2009 2.4086066917934374 2010 1.5596986551231282 2011 5.8001916177206 2012 2.0829993839766274 2013 -0.0377011178569262 2014 10.389440396023673 2015 14.07846390765215 2016 0.018045988207830987 2017 -25.035975259171877 2018 6.293278765755673 2019 14.109395225013046 2020 -8.226514088843302 2021 11.49997841120684 2022 5.000013942684404 2023 4.900016359414224