Year	% of GDP
1965	39.915629509684315
1966	38.56204203751398
1967	39.07440142550697
1968	39.582682154312856
1969	39.3430888363208
1970	38.36803988112907
1971	38.815499318159596
1972	38.935997723637634
1973	37.1615548572744
1974	35.72937061175026
1975	36.667692245048045
1976	36.6971544094321
1977	36.85559824107184
1978	38.43077030505492
1979	38.19888584102601
1980	39.663388264317184
1981	41.571979024530854
1982	40.11864209441465
1983	40.115526986334196
1984	39.725001341154695
1985	40.6640982483949
1986	40.89987890858232
1987	39.692829944090164
1988	40.39848504923635
1989	41.33783402731901
1990	42.557458779945705
1991	45.50243546042596
1992	49.349948323083844
1993	49.8094765681037
1994	48.39891857324385
1995	48.8864098966412
1996	48.744841431742444
1997	49.31515054342056
1998	50.166152018726784
1999	49.684043832182326
2000	49.491951116179074
2001	50.41282430335497
2002	50.041517106983505
2003	49.832819734754494
2004	48.828621061520764
2005	48.7262472199134
2006	48.66807415237723
2007	49.03153595046591
2008	48.6992187509865
2009	50.25751708354972
2010	49.4715379307775
2011	49.27117016081178
2012	50.08541075387565
2013	50.97875581312932
2014	51.75122731647842
2015	54.67807841378366
2016	55.453752831229295
2017	55.48757409819689
2018	55.45333788198593
2019	56.32456080968004
2020	56.22445020105853
2021	54.75317850888829
2022	54.6525601556459
2023	55.91563989665006