Year	% of GDP
1975	27.59273354032515
1976	19.668983026022428
1977	20.197551556018954
1978	29.509189784539135
1979	31.166868122655416
1980	30.055801423898405
1981	29.560770267525804
1982	31.22252545225761
1983	29.34620109829926
1984	23.93765964131073
1985	26.384334519407425
1986	24.1313062996834
1987	22.173924226446154
1988	23.167575968787304
1989	20.44532446669406
1990	18.493299627606078
1991	16.738034676685412
1992	17.727819239392986
1993	18.093598372202223
1994	20.600794674958927
1995	26.257557778154496
1996	26.11707285337988
1997	17.688300433990804
1998	20.618825144290685
1999	19.610589380806033
2000	20.518094285059075
2001	24.52484906854253
2002	25.011452394560784
2003	21.16630017755429
2004	20.861129537126715
2005	22.47839803658465
2006	21.25469560360512
2007	21.849212632472
2008	21.1203502604821
2009	24.99701086143213
2010	30.30536984504048
2011	35.56442222597641
2012	36.455897639209574
2013	23.542032844425098
2014	22.163783799243443
2015	24.601046603484818
2016	24.22844167623947
2017	27.034649115954405
2018	23.965834884145913
2019	25.38733169208764
2020	24.529622698115634
2021	21.961488012484303