Year	% of GDP
1960	10.005651522061463
1961	9.778999671841932
1962	9.206284123083062
1963	9.482124786019435
1964	9.270950294775677
1965	8.912961547741368
1966	9.322177629047983
1967	9.32946888108306
1968	9.391191647529443
1969	9.079711763455476
1970	9.622786438475078
1971	9.774653694637287
1972	9.765753680739541
1973	10.853727036450325
1974	14.047793311794447
1975	15.62146037316986
1976	15.180981490790987
1977	15.856212438231415
1978	16.135199788213267
1979	16.013033682089215
1980	18.04099264483004
1981	18.934834285251785
1982	18.08844096709028
1983	16.364578646223514
1984	15.766312264243377
1985	15.552246572020739
1986	14.73598514180819
1987	15.447697203203111
1988	17.57033269132732
1989	18.882261163370018
1990	18.143111673640338
1991	18.26939319219635
1992	24.427591995168704
1993	22.206246761051574
1994	21.327575798911894
1995	22.26852828348742
1996	21.888048340710196
1997	22.379401471557216
1998	21.756336399556066
1999	22.320758803119162
2000	24.22003217664178
2001	24.09331491462648
2002	25.251601241788407
2003	26.726100056662865
2004	28.86275480308646
2005	28.69252028334853
2006	28.722823667475357
2007	28.53602873166567
2008	29.213501365461923
2009	25.006081150418087
2010	26.151828875586506
2011	27.055530626812796
2012	26.912199794348147
2013	26.515560001153375
2014	25.98563644500126
2015	23.822069499785034
2016	22.965942204708305
2017	23.7053471840043
2018	24.87561882513743
2019	23.822780448186066
2020	22.050167424678392
2021	24.27496926177594
2022	25.634055623248074
2023	24.564985101284915