Year	% of GDP
1970	13.094419692030359
1971	13.21134814145831
1972	15.857307774361356
1973	20.749561889457706
1974	47.737805584404114
1975	38.729394704794394
1976	38.703356893976995
1977	37.06036741537328
1978	33.420568897757825
1979	58.3016140680433
1980	50.98813186042831
1981	39.156264051416656
1982	26.021899144816455
1983	25.410663173924036
1984	25.095232145218652
1985	22.09477101579876
1986	14.441223592436078
1987	17.792705749537003
1988	17.222836392215033
1989	23.240044045297726
1990	23.223164153232876
1991	18.773622890369758
1992	20.678731802857698
1993	20.328851207699614
1994	19.719227022096362
1995	19.44846219815788
1996	22.50150898843804
1997	19.987039635537744
1998	14.086253855382404
1999	18.005137196933763
2000	27.659039621572692
2001	22.868514382407522
2002	22.03889177260731
2003	24.494916497569918
2004	29.012392564191853
2005	34.71485788087091
2006	35.35687392847122
2007	32.927683780642525
2008	37.02771511828255
2009	24.448403514457343
2010	27.790979065081167
2011	34.874071185009484
2012	34.38323199966571
2013	31.709913269044772
2014	28.324871809358623
2015	17.06921867406799
2016	14.479522773578978
2017	18.219915774811874
2018	23.080463443254054
2019	20.377461198091314
2020	13.548360426456421
2021	20.396918844664157