Year annual % growth 1966 1.8416624550171576 1967 -2.9471363795551326 1968 1.434018623623217 1969 4.933762569413062 1970 9.929564254493656 1971 -1.5092084312820901 1972 -4.24036593738083 1973 -12.266675129358546 1974 52.21781049474174 1975 1.5576096648678401 1976 174.1248991239421 1977 18.35363385655893 1978 -8.416457274615468 1979 11.281797849518014 1980 -2.858537818372554 1981 17.34728296495409 1982 0.31029249379670887 1983 2.483436443527822 1984 3.7247934939160388 1985 1.6469228008387802 1986 7.9225209274687245 1987 2.045001266494765 1988 0.7835401525137797 1989 0.6439103568975213 1990 0.416496920595705 1991 2.0781424621872304 1992 10.89994102390537 1993 11.701205078052439 1994 3.3312886737144822 1995 2.300658696797413 1996 -0.8173039140714167 1997 4.84220185792941 1998 3.0505484346022342 1999 2.786385913078888 2000 3.685698816570593 2001 5.699075363298078 2002 9.272611588132179 2003 8.543981385292128 2004 9.760216141124985 2005 9.786877813545189 2006 8.146594191129154 2007 3.0576039891445816 2008 3.186548241332261 2009 6.102818631662444 2010 6.825888998121712 2011 6.736268988312901 2012 3.082250616729425 2013 5.791087498965325 2014 7.8851508329606474 2015 8.751570508702855 2016 8.368428486190908 2017 7.202527081445979 2018 5.277484937451348 2019 13.399247656841865 2020 1.9514486656950538 2021 6.877224787317402 2022 6.241515199167907 2023 8.535459732806757