Year	% of GDP
1970	3.1223848976925
1971	3.31998435488875
1972	9.96079848698807
1973	24.8462723103536
1974	62.6066949632889
1975	65.5154368311645
1976	69.5544887840784
1977	65.35439118757
1978	61.720982948731
1980	59.9004315226865
1981	39.2975147095092
1982	24.4442998217197
1983	33.1713091192494
1984	37.9330038895309
1985	34.7995986956058
1986	33.9562595972498
1987	35.1004069730623
1988	26.4239625063631
1989	32.9595689344962
1990	38.9442334526855
1991	24.5444897748744
1992	26.0034551280989
1993	27.5414502126718
1994	26.0634043120685
1995	23.9593323667548
1996	26.9444100718296
1997	25.8932437123593
1998	18.2806644004442
1999	24.3701807888526
2000	34.9806797269488
2001	28.0689587422791
2002	25.6090865095569
2003	28.186665250467
2004	30.6736955466632
2005	34.870561902884
2006	37.4065877795075
2007	33.5991567858711
2008	31.9744920960436
2009	23.5521044849525
2010	26.7152441963854
2011	29.6086211413466
2012	25.2092889599313
2013	21.4732323194006
2014	22.0986474634681
2015	18.8982989274798
2016	15.6737709259074
2017	17.1505902720615
2018	22.5076667399112
2019	20.8493177212138
2020	13.7524545777569
2021	24.2800139399884