Year	% of GDP
1960	2.0242914979757085
1961	3.9215686274509802
1962	7.023411371237458
1963	8.630952380952381
1964	9.703504043126685
1965	11.479591836734695
1966	10.123456790123456
1967	11.575714623198676
1968	12.303485987696513
1969	11.6723259762309
1970	10.183299389002038
1971	9.140767824497258
1972	11.254019292604502
1973	14.26872770511296
1974	12.682926829268293
1975	18.083182640144667
1976	34.26791277258567
1977	23.79535990481856
1978	25.021570319240727
1979	32.74662300450266
1980	37.04275513240107
1981	37.599107611548554
2007	24.924601934225844
2008	27.981442862733818
2009	30.538219790262005
2010	31.301190043075128
2011	25.33164250948851
2012	35.720596050189606
2013	32.66674550530554
2014	34.09681828083943
2015	30.436634736956776
2016	28.776006348622218
2017	22.205612965942205
2018	21.44727921709618
2019	26.79450413126815
2020	26.27417950372956
2021	28.533415651377414
2022	28.36156791892106