Year annual % growth 1961 4.522603888691407 1962 -11.298076864948655 1963 -1.084011815445109 1964 9.45205522758738 1965 6.5081368044147325 1966 6.815511231367452 1967 6.270629835970752 1968 0.6211167837885085 1969 15.946501133930724 1970 11.446319468586609 1971 -7.40446028250706 1972 10.576099088248597 1973 0.07775857442999268 1974 4.739706929880612 1975 10.163204002480029 1976 11.111109835186411 1977 6.727273986795936 1978 6.30323596297761 1979 6.250000456741802 1980 11.965811230668308 1981 4.4454427575197 1982 -1.2467755742537179 1983 0.08706942697702402 1984 2.65332875246051 1985 -2.118645178212617 1986 5.15151635000835 1987 6.998764673332076 1988 5.040400270603001 1989 3.809523372259193 1990 0.4234301477939084 1991 -1.2649333506640943 1992 11.3878998309997 1993 8.433195133664938 1994 2.9638251978695678 1995 1.3229737753629678 1996 -0.012172040748865243 1997 6.170800622667755 1998 9.70171713706985 1999 7.6292678259154485 2000 7.854881334074932 2001 5.369773814510026 2002 -0.08914973683910432 2003 -1.45313788758952 2004 -6.6420788098100445 2005 1.6608603071400836 2006 5.711917377491233 2007 8.275856624169435 2008 11.339539756212005 2009 14.333699580364296 2010 7.792631527061204 2011 4.133959873924638 2012 5.838969810531609 2013 5.644816287031304 2014 3.6363663055455078 2015 0.9431155525029453 2016 -3.0629931268577337 2017 2.0588316191981164 2018 7.625296999274326 2019 2.257692203028057 2020 1.0232062501123664 2021 4.887480301452769 2022 7.202015056371565 2023 3.8646944045210034