Year	% of GDP
1960	21.357004721385376
1961	17.599094201881396
1962	20.933760154159554
1963	19.427643153378394
1964	16.708433426298402
1965	17.04007133388495
1966	17.65771722027726
1967	15.751604441847892
1968	17.364436264744075
1969	17.110293833300485
1970	17.5
1971	17.346811431423937
1972	18.14044213263979
1973	22.05658655308792
1974	24.083307036920164
1975	21.40603000436957
1976	19.5267947421638
1977	18.169029726428015
1978	14.844545987835374
1979	19.135834145840818
1980	18.227033352837918
1981	15.643766058044605
1982	13.915217770541375
1983	13.254014817644732
1984	12.423349526160706
1985	11.954340642835687
1986	11.263546576206059
1987	15.662584565271862
1988	16.776405961934348
1989	30.068647913754475
1990	28.33919680391163
1991	24.405258630650525
1992	26.25649167182413
1993	27.865282594772268
1994	33.0619777475247
1995	31.039712772012784
1996	31.825978458639053
1997	32.420741742212996
1998	30.529170946961454
1999	32.31676051041885
2000	36.116150042614436
2001	36.886555346567995
2002	39.75351173957398
2003	32.20777479767968
2004	40.44902047611041
2005	41.04237944077354
2006	39.01143648879405
2007	38.59438510162615
2008	37.5620695571187
2009	29.05940996665615
2010	32.166785381777565
2011	19.369327824097983
2012	7.714617821360586
2013	7.778017972227302
2014	7.0157795714743845
2015	14.291104658126901
2016	21.68009890268412
2017	19.339675585181322
2018	14.917027712609343
2019	13.010066464082746
2020	14.780142994072321
2021	24.795027760743853