Year annual % growth 1961 2.4042715326519044 1962 10.26434585484219 1963 6.28203523193298 1964 -0.8286617757946431 1965 14.238862508499864 1966 9.925043680145478 1967 1.3838525275508289 1968 6.608612946328236 1969 10.268450914427362 1970 31.867071427576974 1971 3.2465120079362606 1972 17.196436636068867 1973 11.790014894030733 1974 2.3160539272009544 1975 4.301026440609974 1976 5.449652355673848 1977 6.397685560289474 1978 13.3967079895382 1979 11.047945027954981 1980 9.993284712734464 1981 3.2154519699962236 1982 -1.74707030860921 1983 20.378262109065474 1984 14.59092298443592 1985 -2.6740725598041593 1986 -9.569185518824256 1987 7.246805225324522 1988 11.542744132294175 1989 -5.821103563175612 1990 -0.3658899614971176 1991 4.941101978466094 1992 9.673969872403802 1993 3.4164518307791667 1994 4.525252122196505 1995 7.117580244618168 1996 8.804163668908899 1997 8.901514648997974 1998 6.867999398059908 1999 4.871090945527897 2000 11.066684737289847 2001 2.6975645027865056 2002 3.662871008479442 2003 4.304156547513614 2004 9.464263518882987 2005 8.561625036886682 2006 6.424726725212238 2007 4.837831459583228 2008 0.3455869706667585 2009 -8.745838136016701 2010 14.78244898464692 2011 7.073894355256499 2012 3.888727247523562 2013 2.210617424462555 2014 2.5566150072025664 2015 4.8554494374461115 2016 2.435662367653464 2017 3.8852617654730324 2018 4.477230322204107 2019 0.932960602131601 2020 -8.908868705521371 2021 8.12584170694035 2022 7.671964289705514 2023 -2.514864513181493