Year % GDP 1960 10.67713533854224 1961 13.746685985717521 1962 14.70493511523937 1963 16.496980692728755 1964 18.04484207200311 1965 17.084128838186263 1966 17.44291610570589 1967 19.358045554432692 1968 19.050887883751564 1969 18.19581006631294 1970 18.04794921821281 1971 17.673658274882868 1972 19.240747138422453 1973 20.271642516670333 1974 22.027695410273097 1975 22.0566490382948 1976 22.44382008192824 1977 23.405417631652192 1978 25.944054606480364 1979 27.49279290069157 1980 27.688769581219873 1981 28.91173433846647 1982 29.40827743471262 1983 32.46668285389909 1984 21.511178051527523 1985 17.68283903546734 1986 13.056171208300446 1987 14.033240409242104 1988 14.15516992106407 1989 15.234486016919444 1990 16.902548477946926 1991 15.645491716652513 1992 18.103965294443782 1993 23.149082803575663 1994 25.4845333915397 1995 32.865217535986204 1996 42.872785909502284 1997 49.40110696542971 1998 41.992604467297845 1999 37.327929910099584 2000 35.60713965618697 2001 36.265117304375394 2002 33.66395998385553 2003 31.948373355921834 2004 31.009211653359582 2005 27.896573638125076 2006 27.47069491622923 2007 27.63902331796325 2008 27.876061060915692 2009 27.89666841531375 2010 28.332478810777843 2011 30.49763975005373 2012 31.905375982980704 2013 34.33572790786633 2014 37.57828380410871 2015 39.90378357457012 2016 42.86451799338647 2017 45.60519778838671 2018 47.562790797421435 2019 47.97366866357634 2020 52.035691400360065 2021 49.94132491065103 2022 48.87302991643231 2023 48.301012013127156