Year	% of GDP
1970	7.56598226126745
1971	7.95560273942277
1972	10.2415989638886
1973	21.71338957086
1974	20.4644459882661
1975	19.9204075450338
1976	21.2632328239308
1977	31.3853049753698
1978	33.9830017564172
1979	65.381800177909
1980	69.2286124920013
1981	44.5579995177765
1982	34.6768083317022
1983	32.6731835048483
1984	29.407011079417
1985	29.9922526926025
1986	21.3508417979708
1987	25.8862913584069
1988	26.0745564622059
1989	21.2064484631509
1990	25.5233831093605
1991	24.8804324736507
1992	29.3685944780051
1993	20.0850927076461
1994	17.2275856928075
1995	19.0675432411162
1996	16.9886099764758
1997	15.0830712313948
1998	14.6521009115073
1999	9.29372690499582
2000	10.8456569216916
2001	15.8304411877684
2002	17.4019189724924
2003	20.1839434402257
2004	18.8644610196514
2005	18.7820488600823
2006	17.7577369198911
2007	15.8146237862238
2008	13.9641200526851
2009	8.97077901763052
2010	7.98804207462158
2011	7.3614633514873
2012	5.95623957618071
2013	5.85283366421301
2014	7.88242876018736
2015	6.61317909325215
2016	6.8108721648708
2017	7.82010371696471
2018	6.70278022169487
2019	5.88188183004994
2020	4.66301426840348
2021	8.6785038087485