Year	% of GDP
1960	6.057908423450717
1961	6.584496859847279
1962	5.875977481739679
1963	6.19055698587288
1964	6.632382756531241
1965	6.055459468621615
1966	8.992159674578094
1967	10.634481366530297
1968	11.561116136711616
1969	10.597689692190793
1970	10.396121404218057
1971	10.466307737745286
1972	10.633604888053554
1973	12.06612605269697
1974	12.174040328948672
1975	12.171776632769705
1976	11.135388470670133
1977	10.881220978608138
1978	10.375907886393291
1983	11.029685950341106
1984	12.875802061857586
1985	10.156652009147189
1986	11.555435683207008
1987	10.954844744291623
1988	10.255969039164714
1989	12.750630241366872
1990	13.721078120353495
1991	10.320668982305374
1992	10.277389850417732
1993	10.779389695875603
1994	9.06798823514993
1995	10.987509107985176
1996	10.129482377162837
1997	11.543613950335391
1998	10.778242474976754
1999	9.780753893357096
2000	8.588088902649114
2001	9.21145414740298
2002	9.06218890801013
2003	7.671362553891687
2004	5.0207088160388285
2005	0.23260769051511124
2006	0.6958358584921607
2007	0.6754466320389338
2008	0.7676807051496896
2009	0.9963862641530067
2010	0.9727480141354302
2011	1.7263965379260955
2012	2.0588399218765905
2013	2.72024287928905
2014	2.687991148503724
2015	2.7782900834105653
2016	2.9551063235294115
2017	2.9257095543127782
2018	2.8739037694249143
2019	2.8540101940493354
2020	3.1915004008021235