Year	% of GDP
1960	89.4270881616761
1961	90.44730208911864
1962	87.16640967856719
1963	83.19686721253115
1964	82.16790881192459
1965	78.84434910845958
1966	76.57013466809677
1967	75.69856724451832
1968	73.2655118687563
1969	68.12626690020271
1970	67.14404776078786
1971	65.86386527944126
1972	61.56366308131482
1973	61.5596983339105
1974	60.47274654363515
1975	60.07997843932784
1976	58.22413586253783
1977	57.40222097204217
1978	55.99648805174125
1979	54.074035532514706
1980	50.498654791724654
1981	47.92336584080126
1982	45.74441161583464
1983	43.717746597298856
1984	43.53684604029676
1985	44.75219515060152
1986	46.58093009265713
1987	47.13004533529457
1988	46.4621586568424
1989	45.826761378927884
1990	44.57990447183593
1991	43.241773911803506
1992	43.329031255225495
1993	43.622801974202204
1994	42.968440430223694
1995	40.868754082528746
1996	40.42166136877178
1997	39.7801356612612
1998	39.45240596090326
1999	41.89965983487462
2000	41.85521673295804
2001	46.24497158229202
2002	46.18248489270547
2003	45.53536106429718
2004	41.99842619308451
2005	39.84787728642413
2006	38.106096406316425
2007	36.765963470158894
2008	39.95092384654248
2009	39.10292162205708
2010	36.33783829658135
2011	36.615610020152666
2012	37.306048070547945
2013	37.3334601292955
2014	37.584381318964205
2015	37.15808060615321
2016	36.4607950720948
2017	35.20102005770313
2018	34.55141907831855
2019	35.357735648543795
2020	31.957545751402204
2021	28.98812886699136
2022	28.26273401176665
2023	31.315224425119077