Year	% of GDP
1960	2.7693707594010246
1961	3.497351827117231
1962	4.756047638631879
1963	6.560302298729925
1964	6.737780854336557
1965	5.921308920919361
1966	5.544369873228933
1967	5.898653998416468
1968	5.21675925747399
1969	4.674447625339499
1970	5.328604162609441
1971	5.6224722182460125
1972	5.809447960226346
1973	6.005307669800074
1974	6.317090930063225
1975	6.438328014738137
1976	6.554146022264762
1977	5.857854113963631
1978	6.223152712787583
1979	5.8000514764162805
1980	7.1458243184768495
1981	7.4044265593561365
1982	6.875662200062324
1983	6.872234955492777
1984	3.9490749221469135
1985	3.048109825974349
1986	4.691303245436106
1987	2.692328290591142
1988	3.2201428926420563
1989	4.644183337507616
1990	3.1427337222775598
1991	3.476131149533562
1992	3.0203951223677894
1993	3.402811361880903
1994	3.0982516390475063
1995	2.6271561457853365
1996	2.387895790612436
1997	2.9365995237804214
1998	2.558147940650245
1999	2.0066088213668247
2000	2.0322557415102622
2001	0.0015445287066659795
2002	0.0019484183533671773
2003	0.0028423269177846842
2004	0.0034518857183797654
2005	0.0032766350772945436
2006	0.0033797870660415828
2007	0.004349008808769868
2008	0.0056592509284023535
2009	0.00827634633496704
2010	0.00777107988135268
2011	0.007648790432917697
2012	0.00549052669186186
2013	0.004714763633763902
2014	0.004843397765931685
2015	0.005216355992788823
2016	0.005438213060426974
2017	0.005017080257329423
2018	0.005592054515487773
2019	0.006093362240894071
2020	0.005881631278068379
2021	0.007090160305529041
2022	0.006126987279125158
2023	0.005426704601542479