Year	% of GDP
1965	11.585365853658539
1966	7.8590785907859075
1967	8.204615988299505
1968	6.7368421052631575
1969	5.6705670567056705
1970	5.873821609862219
1971	5.892070484581498
1972	5.9008654602675055
1973	5.606373561522573
1974	5.962971868237557
1975	6.662859318484676
1976	6.7542503863987635
1977	6.11439842209073
1978	6.391246548726865
1979	5.04340017958695
1980	4.402401309805349
1981	6.060100166944908
1982	6.789148844552892
1983	5.926041140101878
1984	5.043294745662767
1985	5.042551686744148
1986	5.544728495548168
1987	5.484164267313229
1988	5.114975805451012
1989	4.95127584070298
1990	4.770750175473424
1991	4.826396512247907
1992	4.876027389430606
1993	4.308401382696258
1994	4.875553145715635
1995	5.323237406780437
1996	5.614679582249967
1997	5.6798961140998925
1998	6.218138707765264
1999	5.563178688873642
2000	5.626987325140784
2001	5.840160419635812
2002	6.057066480706648
2003	5.705543082802671
2004	5.554128171688279
2005	4.94950472169885
2006	7.102391339048611
2007	8.528467093734122
2008	7.681821076078423
2009	8.469439528696778
2010	8.499444492243907
2011	7.731255714295639
2012	8.073710841903631
2013	7.993242274777022
2014	7.848786645029112
2015	7.242023884760342
2016	6.503236311213725
2017	6.1736042056406335
2018	6.147461525957321
2019	6.0923699121181185
2020	5.659035942373972
2021	5.227441720714729
2022	5.384869895849658
2023	5.6288305024055765