Year annual % growth 1961 -5.206630867880108 1962 7.684729064366152 1963 13.380603844242557 1964 11.377849504963365 1965 20.268067378022607 1966 10.075301206310499 1967 6.567245860389747 1968 13.544742584875195 1969 7.078245138699543 1970 9.429778247101012 1971 8.105760880253698 1972 10.532892974694107 1973 10.215618185767127 1974 12.719812424167486 1975 3.1656266309827004 1976 5.803036982683338 1977 12.732253456563171 1978 8.19862651337506 1979 2.6657553004207415 1980 0.79893475272155 1981 -0.5000943548631653 1982 -11.398767190549393 1983 1.798137641056428 1984 10.398485969338296 1985 2.0095238091129204 1986 7.300905606249984 1987 5.498999393735787 1988 2.202061853080096 1989 3.401387995954437 1990 2.5988215523069726 1991 2.0994177825652827 1992 9.925028454914724 1993 5.1161064114284045 1994 1.848010104795577 1995 3.4990830035260103 1996 -0.5303323078189948 1997 7.517465001174088 1998 5.903583542394642 1999 2.1438401272689163 2000 3.191876206623448 2001 -0.5659254491350083 2002 3.4675584313013985 2003 1.3707947156707405 2004 4.020619738587513 2005 3.592048311110503 2006 4.050211604446517 2007 2.8333805430972774 2008 -2.286927502256077 2009 -7.987483562223801 2010 6.834227021543285 2011 3.759820606352335 2012 4.100577145584893 2013 -0.06493499049591378 2014 0.2436927225311507 2015 -4.090319953698568 2016 4.250085377506423 2017 3.9562545285060366 2018 4.204605217309293 2019 3.0087803281172256 2020 2.1427412697569252 2021 18.043766480166184 2022 3.397933660895376 2023 8.399746072148147