Year	% of GDP
1970	65.33139351479112
1971	64.7617713131167
1972	60.77312761050965
1973	63.31363862189028
1974	61.03422276981924
1975	61.30360423132958
1976	59.475483250421455
1977	55.58015511930224
1978	53.964016948195834
1979	53.832249196659696
1980	57.5719356233857
1981	58.14259604513944
1982	52.612676828599625
1983	53.48218720817024
1984	54.659857325401326
1985	55.95197094912494
1986	52.51958804964978
1987	50.55635031901805
1988	48.21563001763576
1989	47.12209252983145
1990	51.056850184136415
1991	48.5979103153404
1992	48.004521705755934
1993	47.16981169331137
1994	40.732325452444144
1995	42.02269312836133
1996	53.380921512732805
1997	42.42186414819136
1998	44.53870404797601
1999	47.63530412823891
2000	44.10704010936864
2001	43.84314205827972
2002	43.33361124212516
2003	42.841283700539385
2004	41.90260496890339
2005	40.84812339229493
2006	40.637682265821816
2007	34.93417191975905
2008	38.004823301706466
2009	36.72136413767865
2010	38.430545287633535
2011	36.70457600440356
2012	35.42003257416088
2013	38.36740004055113
2014	34.95819234365408
2015	30.684697299422158
2016	31.54433612866061
2017	28.54664700601706
2018	29.011900485457065
2019	28.844389999617647
2020	28.624949999794723
2021	28.660219999786058
2022	27.566714644381022
2023	25.219392135359044