Year	% of GDP
1974	21.87997970268109
1975	20.754939683845674
1976	20.4588631558944
1977	20.861600390655404
1978	21.699327825550426
1979	21.881383116639793
1980	21.346299804424657
1981	17.818513796512438
1982	17.160631148121205
1983	17.182237137442996
1984	16.331360869055995
1985	16.762158745999454
1986	16.854677943833202
1987	16.619281660872844
1988	17.025089934199364
1989	17.612299073722937
1990	17.754890571647678
1991	17.019763601886947
1992	16.746553559302924
1993	16.66942862248274
1994	17.38527909496335
1995	18.004277776990584
1996	17.573656705625297
1997	17.25893645052582
1998	16.9531083355087
1999	15.833910287831223
2000	15.64779610297991
2001	15.353754827552951
2002	15.342628489594365
2003	15.205652146645857
2004	15.1386195623564
2005	15.086809413564367
2006	15.423815036251579
2007	15.15107860911124
2008	14.972608815282024
2009	15.086046253664295
2010	14.832701633856704
2011	14.477547635353627
2012	14.41735300298967
2013	14.310526641880186
2014	14.336512061551407
2015	14.670087748011609
2016	14.82818361311295
2017	14.77151295878385
2018	14.827920350104678
2019	14.481214743937212
2020	14.923673766506667
2021	15.171367582823676
2022	14.771317731815708
2023	14.548684946596602