Year	% of GDP
1970	25.6178285718857
1971	29.7183489560075
1972	36.4640803456637
1973	43.2714266518105
1974	67.5207160134123
1975	54.3839536263905
1976	53.0613712172026
1977	51.9140998377149
1978	44.9125645737099
1979	87.2846183260415
1980	70.4665073207524
1981	55.8014376178588
1982	36.912900705725
1983	34.9686636412614
1984	34.0894843992739
1985	28.10899311062
1986	23.943284598958
1987	28.0081795220358
1988	27.0050726562585
1989	34.9346845256811
1990	47.2009452516739
1991	30.6033571366628
1992	31.4732076623802
1993	30.4861528754163
1994	27.4348819959504
1995	29.0242473614603
1996	34.3754116977828
1997	30.2153995363377
1998	22.2730147519679
1999	27.9778749101784
2000	42.6687976015313
2001	34.5968576950563
2002	32.4379936618598
2003	38.0176108810544
2004	43.622529277929
2005	49.9329268031463
2006	50.7560683000309
2007	48.4725676503893
2008	55.0244289481432
2009	35.7727355951894
2010	38.8834681571132
2011	50.2036438017781
2012	48.5007097596571
2013	45.530927478843
2014	41.3384300115975
2015	24.8553045322483
2016	20.7349959872418
2017	24.4865557580774
2018	29.2707418122277
2019	25.453167735458
2020	17.3184270283149
2021	25.5652418188141