Year	% of GDP
1967	23.903711603044492
1968	18.095122662451857
1969	19.012223546991947
1970	18.201529568989358
1971	20.215757922720112
1972	19.56931231244771
1973	22.843225652191418
1974	40.870148338189374
1975	29.264402751952446
1976	21.03115117627622
1977	19.579411239285502
1978	29.828568055173278
1979	27.226038768688383
1980	29.22374020092487
1981	28.802889293508837
1982	29.633340884921733
1983	32.08271717888834
1984	36.87897202144799
1985	42.71817375870967
1986	34.958170826710095
1987	30.4947830984003
1988	32.246211719303886
1989	29.005230337752014
1990	30.930569435686404
1991	31.255713047960214
1992	33.87290169365997
1993	30.392099426826256
1994	36.991496031314554
1995	36.68316053426191
1996	33.622943782731134
1997	33.21086274854203
1998	28.92439749879704
1999	29.775446683880148
2000	32.943984975458015
2001	33.88836595041697
2002	29.74183755852084
2003	32.85880131025971
2004	31.634432954492908
2005	31.136456434394688
2006	32.547728736082036
2007	32.49763509420304
2008	38.33182606064046
2009	28.805879239416814
2010	35.14812706291375
2011	31.187379866748945
2012	31.26425454476761
2013	39.87712061352545
2014	38.08322053103763
2015	39.595931174324214
2016	40.320383449542014
2017	35.85435438885342
2018	35.622408402120726
2019	37.95341163328308
2020	36.333944228860624
2021	39.34279874559755
2022	39.732606413695976
2023	37.786931889916154