Year % GDP 1969 0.1670688695006497 1970 3.29935125115848 1971 26.246948029298917 1972 3.99390759857844 1973 3.6070949470860034 1974 9.914611005692601 1975 11.657162026165716 1976 14.77962934122411 1977 13.394109396914446 1978 13.35896203748198 1979 8.343568315180882 1980 6.0286078034898525 1981 6.764808973010866 1982 6.760438446429704 1983 8.841181902123731 1984 6.716966341678507 1985 5.623303555966026 1986 3.591506572295248 1987 5.4863671881491225 1988 7.37073707370737 1989 8.01763553233181 1990 8.736576121288692 1991 10.211625245888992 1992 11.46027661627533 1993 14.068564036222508 1994 12.632709420067506 1995 12.341790609507145 1996 11.665281241341091 1997 6.610458028286452 1998 6.632305121158106 1999 6.309320693869106 2000 6.260160689013889 2001 7.450260464568283 2002 7.30760396164465 2003 5.512909113661755 2004 5.12186799097544 2005 6.38762936906529 2006 6.605522633947232 2007 8.102019713062495 2008 8.735512065361961 2009 10.14129489599237 2010 13.948429835891504 2011 14.265499555630582 2012 14.782892588965066 2013 18.660420554454685 2014 18.322231435835285 2015 18.74759036660698 2016 21.649879524227124 2017 19.966207122181633 2018 20.63941231772856 2019 20.650309957207174 2020 26.023287129400895 2021 26.39037505079647 2022 25.489272191620227 2023 25.700103200125536