Year % of GDP 1970 35.169889653665464 1971 33.58212581513552 1972 33.860023434357565 1973 36.34320546764362 1974 38.71351717992539 1975 35.242567602953756 1976 35.20362636970411 1977 33.55055935701097 1978 35.43403297428727 1979 38.492271441685524 1980 41.92925075169898 1981 42.059597877335875 1982 40.451864218141345 1983 40.753952457095075 1984 41.57943161311468 1985 41.33111190927486 1986 33.04365608545622 1987 31.22918878391618 1988 31.71119918564519 1989 36.43280894563641 1990 38.72797758517912 1991 38.58967430169082 1992 36.59605973732402 1993 36.693550744037005 1994 36.74404452756336 1995 36.61873999364577 1996 39.43244914058589 1997 40.03601030367813 1998 36.7545972571568 1999 38.38659321275079 2000 45.61277608585598 2001 44.98515358318206 2002 40.4688823606507 2003 39.672309809463115 2004 41.11014734445002 2005 43.44205941101742 2006 44.537323736971715 2007 42.9575531295574 2008 46.21810089869515 2009 39.81014972259021 2010 40.15032907274298 2011 41.66126617434106 2012 41.28706485440226 2013 39.861309534403226 2014 39.72767204254824 2015 38.575188734971725 2016 35.93817142618745 2017 36.7322649944946 2018 38.221027288351635 2019 36.64092532062696 2020 32.210337779767876 2021 43.036301920636575 2022 55.46006702650052 2023 47.178442467875