Year	% of GDP
1967	11.34020618556701
1968	55.4002541296061
1969	62.7
1970	54.026217228464425
1971	33.65307753796962
1972	15.625
1973	12.632821723730814
1974	25.963095866314863
1975	16.85994433304948
1976	16.36321384145652
1977	14.25856418899829
1978	9.593247797860771
1979	20.34897246994959
1980	25.003620347514644
1981	26.598327818835887
1982	15.394342937290453
1983	15.584510952389172
1984	12.701437526666448
1985	12.645045072052
1986	-1.6799477542285537
1987	19.810884990706697
1988	8.652504264227012
1990	19.63097331345011
1991	8.324160704457897
1992	9.168946719856304
1993	4.996252810392206
1994	8.21371771384857
1995	8.479207099922744
1996	14.044226546141669
1997	11.445931521471385
1998	-7.815993333251205
1999	10.497292894310188
2000	27.78262930555499
2001	22.36589917802672
2002	21.183914342898905
2003	16.958709189656442
2004	12.508006492489809
2005	27.217584117339953
2006	24.50824986336144
2007	16.492496608108883
2008	21.298576725532055
2009	15.988507978720804
2010	21.80221848739496
2011	26.19220210888052
2012	23.371329447434743
2013	19.517703670287215
2014	20.601075111944066
2015	2.9268808464097966
2016	-0.22432235953889296
2017	2.4776933617245747
2018	11.963392451114142
2019	12.507900317194043
2020	2.2362015487945635
2021	11.137057712018855