Year	% of GDP
1972	26.097153197306085
1973	26.12213201960217
1974	26.967188380073598
1975	26.702220298404477
1976	25.07145776470445
1977	24.29838194451718
1978	25.203338946802056
1979	26.0962595758841
1980	25.198029649447314
1981	26.23472855728728
1982	27.16109610787825
1983	25.451454537958384
1984	26.021882574854587
1985	25.208227115604853
1986	25.41065688106057
1987	25.217125311879922
1988	27.093148937476435
1989	28.51666760967734
1990	28.389125259080007
1991	28.599981109707006
1992	29.74402759770176
1993	28.926511388805732
1994	28.82324703953487
1995	29.312584171846417
1996	30.37003465884017
1997	28.6857808569779
1998	30.727748400307703
1999	32.93466325594762
2000	32.10514654396005
2001	29.975039359625633
2002	29.533775380499645
2003	30.471152556263387
2004	31.513518429348654
2005	38.55035167210214
2006	39.10637985186124
2007	38.14343994513308
2008	40.17799359146827
2009	34.41367915771339
2010	31.8572856059815
2011	33.13693100077707
2012	34.109115493563706
2013	33.64522023186615
2014	35.20372157439361
2015	32.36346226030159
2016	47.96776548807099
2017	33.78679391717088
2018	33.01485652234867
2019	30.430432941634983
2020	29.466666256956042
2021	28.862518753758852
2022	31.16279219657222