Year % of GDP 1962 10.098422749619054 1963 9.740191200724771 1964 9.272005227317562 1965 8.656449747577925 1966 8.680205835844008 1967 8.389652894001406 1968 9.034972395126632 1969 9.94748829903864 1970 10.87449852084156 1971 13.291132684644916 1972 13.438093904015489 1973 13.152467355508865 1974 13.818646112271098 1975 21.962332938341543 1976 18.354555620239353 1977 18.949162632633985 1978 18.615072224025543 1979 16.14547131396091 1980 20.438126886219543 1981 21.501663892864226 1982 23.62890070914422 1983 23.239099385836745 1984 24.323099734645773 1985 23.759066368429902 1986 23.588047407208702 1987 20.61793759369532 1988 20.278626812681562 1989 21.740974537942126 1990 25.1156071155851 1991 26.467866169299143 1992 29.622098113792372 1993 26.49093588954317 1994 28.441370964563628 1995 22.873627302817034 1996 23.18018049661566 1997 22.12860846172542 1998 19.507033608460464 1999 16.826282243306125 2000 19.189308003516903 2001 17.99779750202318 2002 14.641043609397764 2003 16.78800369178674 2004 14.033838721560151 2005 15.459971580036594 2006 18.534837206098917 2007 20.710981957984433 2008 23.266602294679668 2009 23.952419558713164 2010 25.5234386493141 2011 26.138233343594525 2012 24.88315072828711 2013 26.86197073625468 2014 29.965430262244496 2015 30.984760649304288 2016 29.832094609205694 2017 28.630990850217646 2018 27.934300911421623 2019 27.821632759183483 2020 30.54664514216509 2021 32.72816126464878 2022 33.426267151739836 2023 30.280524894889883