Year	% of GDP
1970	4.338415402794028
1971	4.687638708291411
1972	3.354641485568589
1973	2.583872824199188
1974	1.5291594477260457
1975	1.7097420147522517
1976	1.43838297873747
1977	1.6641145725352067
1978	1.4906413149703042
1979	1.2543727501881534
1980	0.9587721124566781
1981	1.0079238040131362
1982	1.121503576468332
1983	0.8032561413820147
1984	0.6126795052342808
1985	0.5402338870656863
1986	0.5620799403541926
1987	0.7296337236593261
1988	0.6414010298584978
1989	0.6201163414630607
1990	0.5672980930640968
1991	2.8217891559012216
1992	2.895644311283261
1993	2.2824840523805325
1994	3.2790216997889634
1995	2.6817167373558473
1996	1.874671630545667
1997	2.2001920706916827
1998	2.199727724221091
1999	1.6241552014422838
2000	1.441858465376861
2001	1.1276917153104002
2002	1.7393819516414646
2003	2.3815270518244787
2004	2.6764241989142965
2005	0.15880931328109396
2006	0.15355334793168135
2007	0.06948530290740493
2008	0.057450757465818486
2009	0.10001308526444547
2010	0.11057694877130239
2011	0.09291806308938769
2012	0.09458383615969584
2013	0.09124951602523569
2014	1.0263728436106616
2015	1.065311421466342
2016	1.1003437426317861
2017	0.9436900196447604
2018	1.0202789274424064
2019	0.9231064832450429
2020	1.0308568736038057
2021	0.9621533458904343
2022	0.7354911873749871
2023	0.7378089847875106