Year annual % growth 1971 2.659181286422111 1972 8.045180099904485 1973 16.167443777410014 1974 4.362459329669832 1975 -2.65138559240998 1976 5.224338431936232 1977 3.4347521255255344 1978 10.411009879396403 1979 8.318071534797397 1980 8.350459033383586 1981 1.3315343977881753 1982 -6.1828542958650985 1983 -0.5389375884164593 1984 10.89619050944539 1985 3.6831534872412703 1986 6.778255147545039 1987 8.796740492973427 1988 14.34661582415282 1989 8.909050068179809 1990 7.846244558608873 1991 5.503977872945015 1992 7.0482025798883114 1993 4.899109740017664 1994 9.750285714387047 1995 9.946149476161011 1996 7.6580127318921996 1997 11.1564914181225 1998 3.948335551886629 1999 6.354410356147582 2000 8.474102729862508 2001 -4.867310995773948 2002 -1.15524402359722 2003 1.1220735580490242 2004 8.614567621435 2005 5.80466341923416 2006 7.442671875853833 2007 7.054798888397485 2008 3.6188561790133917 2009 -9.209111813466677 2010 11.541840840753252 2011 6.756095293339428 2012 3.799957604924572 2013 2.9143953448047313 2014 4.316818746204859 2015 0.8619249467183465 2016 0.6704392212255215 2017 3.6224414133871647 2018 2.984709567844135 2019 0.822679323045719 2020 -12.377520192948225 2021 5.6637055834812315 2022 6.278039610566921