Year	% of GDP
1970	61.943456391313354
1971	61.60374958047823
1972	61.64823189723086
1973	62.247407245670175
1974	63.06668532253333
1975	66.1618201482562
1976	67.75860492235394
1977	68.40144668880616
1978	67.66175709197749
1979	68.37004260748554
1980	68.09098608225881
1981	68.0460454782115
1982	68.35747197942293
1983	69.5069270583541
1984	68.13219169152337
1985	67.59707158755118
1986	67.27384257709751
1987	67.20132554126535
1988	66.19004560730112
1989	65.48034588907652
1990	64.87278801970614
1991	66.87765916040478
1992	68.45360243154363
1993	68.46084791764453
1994	67.70747254893544
1995	68.1490598933211
1996	69.08864844661741
1997	69.39082514582273
1998	68.81314481342528
1999	69.17471256858349
2000	67.82721958384369
2001	67.9393079334775
2002	68.44762810882341
2003	68.90964105424521
2004	68.3686595906772
2005	67.3636050833725
2006	65.10785027200819
2007	63.43741423937257
2008	63.10733638422925
2009	65.41465702768043
2010	64.49430805654892
2011	64.16400712554339
2012	64.23888535341146
2013	64.40234721816424
2014	63.98568724005806
2015	64.40570742930417
2016	64.36854411905308
2017	64.88051268234479
2018	63.737678887376894
2019	63.75903177691497
2020	64.01611384206693
2021	61.57642309047969
2022	61.76093873814076
2023	62.986689860972234