Year annual % growth 1971 0.3438945844943362 1972 7.543875625821244 1973 -4.1684720545026295 1974 16.83612821164111 1975 -4.309262155016995 1976 7.635702385921235 1977 16.383997836434006 1978 4.738221733225473 1979 20.13479093081247 1980 -4.79879575194542 1981 5.330213357679355 1982 15.306965809415217 1983 3.262069809117122 1984 -2.276928459965262 1985 9.077328585733738 1986 5.298995458407418 1987 2.1589536453786167 1988 2.4718119141266044 1989 5.450391744056546 1990 -0.12086692334759164 1991 5.211210183217091 1992 -2.5071878598065496 1993 -0.3541612554931959 1994 -4.944443143909638 1995 7.624774314395793 1996 13.856157662475582 1997 7.797614153996491 1998 2.891480185303948 1999 -0.059618555103213566 2000 9.200659172721487 2001 7.210837004845899 2002 6.912063370300331 2003 4.287430796309039 2004 7.852126630249387 2005 9.130450362514381 2006 10.22745138578425 2007 4.518903097616757 2008 3.2253192434116755 2009 5.938686911864238 2010 2.6642690876078206 2011 6.561330967237254 2012 8.593800638063627 2013 5.426712723047174 2014 5.062862479605968 2015 5.537845490529875 2016 6.735049069073071 2017 6.153708538084942 2018 5.115082767662898 2019 7.990337788931811 2020 -2.478247790006094 2021 12.22606095833369 2022 5.876613242885796 2023 4.867305273281005