Year	% of GDP
1960	1.91740412979351
1961	1.84496124031008
1962	2.05952380952381
1963	2.14912280701754
1964	3.14224137931034
1965	4.11530398322851
1966	3.5251509054326
1967	3.6546184738955803
1968	3.75
1969	5.19725557461407
1970	4.95400788436268
1971	4.60336538461538
1972	4.191750278706801
1973	3.16211878009631
1974	2.56783587028458
1975	2.25108225108225
1976	2.66666666666667
1977	2.6156034273424202
1978	2.04069088450427
1979	2.59315206445116
1980	2.30270466802674
1981	1.78180681462957
1982	2.4404761904761902
1983	3.26868598823273
1984	4.08451949429759
1985	3.3996981240566404
1986	3.22724790228886
1987	2.5527131145293502
1988	3.5519651214977204
1990	4.81332473594827
1991	4.992301345819341
1992	4.3893635177683406
1993	4.921118422943191
1994	3.89783506504326
1995	1.66798422244204
1996	1.26931409320392
1997	0.954304906614448
1998	2.37966073878893
1999	4.00978609546617
2000	4.79142088157686
2001	2.94404491102975
2002	3.2738003511599403
2003	2.25618439439824
2004	5.78262016066383
2005	3.31128145892401
2006	3.6405121940265897
2007	4.0832306034626
2008	4.97892177814511
2009	5.45391875825013
2015	2.7129402331584203
2016	2.27850721551928
2017	3.2858039010388898
2018	1.77892402693237
2019	1.63015149648972
2020	0.978360320871545
2021	0.9159187570581431