Year	% of GDP
1965	16.801001727500886
1966	17.104363065882676
1967	17.18833868570548
1968	17.901530225230005
1969	18.49415525550647
1970	18.825165641865958
1971	20.012885610939772
1972	20.278125261586066
1973	19.087276201144025
1974	19.424295866378223
1975	21.920408450187423
1976	20.99111099551417
1977	19.65127379174556
1978	21.271923461862755
1979	18.37050622117212
1980	18.21809676995995
1981	21.205037505304848
1982	21.337261912472528
1983	21.090033333897843
1984	19.777864662665316
1985	19.53477733284628
1986	20.411227649575046
1987	20.318356173720144
1988	20.958884984411732
1989	18.71734437790749
1990	13.463513034919384
1991	16.1463233015472
1992	16.648420455771323
1993	15.871624535525733
1994	15.621312311737062
1995	14.740552220685727
1996	13.944030429863725
1997	14.302554499009654
1998	15.12248299740349
1999	13.951445897644337
2000	13.877180461195168
2001	14.45514801480006
2002	14.508612151397845
2003	13.709676555490638
2004	14.298475578739591
2005	13.796904119957981
2006	13.239815927557922
2007	12.671975748259475
2008	12.604504836707822
2009	14.240855200599087
2010	13.788661297819063
2011	16.021852507592342
2012	15.424506443909443
2013	15.767434837852704
2014	16.233485621895248
2015	17.072474804802237
2016	16.88085745982735
2017	16.502881177160376
2018	15.891335051495636
2019	16.279702041804693
2020	16.32925251403499
2021	14.266440797583169
2022	12.984076066017526
2023	13.718772875034885