Year % of GDP 1980 17.9415782493369 1981 21.8183482666467 1982 29.386652835408 1983 33.666485013624 1984 34.7803346494086 1985 33.5943076923077 1986 38.0425363153243 1987 34.2493227554152 1988 45.3588459487396 1989 28.2984817985565 1990 29.6097936652331 1991 18.7304932505261 1992 21.4720995420893 1993 20.8984828496042 1994 21.8524608064066 1995 28.007134836745 1996 42.0479779750932 1997 48.2401143440241 1998 56.0694917643882 1999 57.0751594333098 2000 57.1228498035524 2001 60.7208595242414 2002 62.1191015534008 2003 57.5479803998431 2004 53.2010488620779 2005 57.122427428263 2006 22.6581605785108 2007 22.3572794646428 2008 21.8393974995755 2009 23.3480398713209 2010 24.51380230878 2011 26.4371988905893 2012 28.7678132325111 2013 31.9733407856098 2014 36.6598740543025 2015 36.502241062669 2016 34.9527284059029 2017 34.0693866275831 2018 36.5704424077752 2019 37.0927471310292 2020 39.1757180392318 2021 30.828624719599 2022 20.187564075104 2023 20.0855270124848