Year % GDP 1974 2.611807689308114 1975 1.917119790225594 1976 2.9654058240604995 1977 4.989642568447879 1978 4.53405314575359 1979 5.339445772873442 1980 5.77134166972366 1981 6.776746856866538 1982 7.155709510328648 1983 9.034443857539957 1984 12.55462231063737 1985 13.039522545961166 1986 12.74331351870194 1987 13.214530846119226 1988 14.414933706354422 1989 15.970031161617202 1990 16.074099153044457 1991 15.919909283879086 1992 14.54554340304366 1993 15.294316924438064 1994 16.2711918310691 1995 20.881760737261615 1996 18.911997573886424 1997 19.98663127563067 1998 20.496637948547107 1999 20.98723413231733 2000 21.77938901332348 2001 24.179592705354967 2002 26.20812497374956 2003 26.038627676488474 2004 27.913403288337413 2005 29.343830496862257 2006 31.165701696138893 2007 32.04283305356478 2008 34.04219174648177 2009 36.19103756525222 2010 40.96132262923417 2011 42.47024116297718 2012 43.00066937509142 2013 41.79475480533917 2014 43.73612387048529 2015 44.40697180628371 2016 37.798642667231775 2017 40.4489561448676 2018 40.024736590697934 2019 39.03447093500655 2020 39.161059242521 2021 39.08201632957006 2022 38.955568428803225 2023 37.64138023391027