Year	% of GDP
1960	21.950084405193675
1961	16.161058035304617
1962	15.097432769677724
1963	16.22429227135523
1964	17.582595934295952
1965	18.347291150169653
1966	18.381313483691784
1967	17.332003721033708
1968	16.925921769796794
1969	18.076879285787196
1970	19.682815724717667
1971	20.340478016570387
1972	20.969908824742028
1973	20.877269779821205
1974	20.705441360748903
1975	23.80122675858461
1976	24.89791356953409
1977	25.09381644782771
1978	24.735118815475822
1979	23.022101982943337
1980	23.247401951536688
1981	22.875506738351277
1982	22.93796117144549
1983	23.88450489005973
1984	23.695662307482696
1985	23.375110573017093
1986	24.0782144686345
1987	23.078735162623957
1988	23.448832663271403
1989	23.298644814542946
1990	21.539851519059106
1991	21.619980904444695
1992	22.995753243968206
1993	24.1428732060845
1994	24.484036970196364
1995	23.64696955907734
1996	23.568601751381816
1997	23.416511014037088
1998	23.086169259479757
1999	23.07912320178013
2000	23.20857244828087
2001	23.886199266330635
2002	24.443451783734737
2003	25.54851098375221
2004	26.706581651912558
2005	27.018036127190886
2006	27.363649599721352
2007	28.06255279749893
2008	29.02375985257369
2009	30.895720899274636
2010	30.87691678225965
2011	31.4119988690802
2012	31.95252990652857
2013	32.24045746248229
2014	32.223502494208695
2015	32.14236526001654
2016	31.737681315880334
2017	31.843203642899358
2018	33.048176239643695
2019	32.91181076138429
2020	33.01585695205962
2021	33.47067564756977
2022	33.05458126600443