Year annual % growth 1970 14.19732802676765 1971 5.956251388551578 1972 5.156435073723941 1973 10.448418600015913 1974 -1.3950612780429879 1975 -2.761227797744482 1976 10.146070981780682 1977 3.392259805048809 1978 6.6916969514998925 1979 5.698057178013926 1980 0.9803355693730964 1981 -2.620005651002799 1982 -1.076764292362995 1983 3.7012109167968674 1984 5.553573771000316 1985 5.23634810967701 1986 2.818717780656584 1987 3.5459740844071064 1988 8.548085831951411 1989 7.80128982932051 1990 3.9739878278330423 1991 6.336230478156708 1992 2.851693097117277 1993 0.39417551810497287 1994 9.033952596573798 1995 10.158725892878778 1996 5.304570430538007 1997 10.925367332149165 1998 8.339775055295533 1999 9.78261414805101 2000 11.257611620936885 2001 2.473474580163341 2002 0.2812514253463405 2003 2.0385474193538755 2004 6.366283636775364 2005 5.427500404114355 2006 7.650056253831522 2007 7.813123485528692 2008 -0.7006721245923444 2009 -7.80653384381867 2010 8.521722297418165 2011 3.8715219336272355 2012 2.1846594542326727 2013 2.234700687150351 2014 3.266635836696622 2015 14.528947281198867 2016 -1.9772693089391709 2017 6.189872919699411 2018 4.723190533777341 2019 3.233176322233504 2020 -4.754979586768641 2021 6.15275297469617 2022 3.843079138745182 2023 -0.8195340466353684