Year	% of GDP
1960	17.93133528653646
1961	19.26214583057482
1962	18.10757077062446
1963	18.995457107347846
1964	19.52982849317314
1965	20.057222994649404
1966	18.358013816683727
1967	18.19754447041415
1968	17.742249749372615
1969	17.640095235081574
1970	18.211438732960605
1971	19.203615743370143
1972	19.548431939764598
1973	18.700758647942692
1974	22.51151757429942
1975	19.54510626483411
1976	19.41927195783007
1977	21.09561254728478
1978	22.650720754686805
1979	23.59537674411883
1980	19.55500345443521
1981	25.560137626573603
1982	25.134194314918606
1983	21.039572118499013
1984	23.291417303236763
1985	26.446076903012973
1986	26.065683939725538
1987	25.827131305409523
1988	26.28263499460069
1989	26.861036913386155
1990	27.336197701371507
1991	25.140505278229213
1992	27.440204155129997
1993	22.716410511618026
1994	26.310166555398844
1995	29.152337151558793
1996	22.75925318092788
1997	25.69273290651321
1998	24.975369942390113
1999	30.958087968386145
2000	25.677316683955027
2001	29.907888982732455
2002	30.251300120718618
2003	30.8396999424416
2004	35.09649170177731
2005	37.42826401659831
2006	38.99850637175316
2007	41.95079822673341
2008	38.42241965281916
2009	39.2567917551336
2010	39.78562418477355
2011	39.590421855175464
2012	38.34741567298497
2013	34.02319789978539
2014	34.267805626899225
2015	32.11673013586214
2016	30.172690580006133
2017	30.982172834499938
2018	32.34321821546396
2019	30.096197568562456
2020	28.922384008076836
2021	32.11582217551878
2022	33.02391697394547
2023	33.735080414403875