Year	% of GDP
1970	59.79415789592114
1971	60.088678046287555
1972	61.975065669733276
1973	61.05651738583695
1974	62.244823351159596
1975	61.17324321016008
1976	62.49674472374779
1977	63.727826764854015
1978	63.869566109855434
1979	64.31940373026522
1980	64.60701732850083
1981	65.44930929071887
1982	65.99299427625157
1983	67.05315288227862
1984	66.86575226707059
1985	64.2822381370829
1986	64.28676504054776
1987	65.0273176103111
1988	68.34698356033189
1989	68.24591721326347
1990	69.23885061891055
1991	67.74462093703096
1992	68.35209245192478
1993	66.60799222060511
1994	67.30454406226704
1995	66.85161734450713
1996	66.9289318244862
1997	68.69318786915338
1998	68.66264989089356
1999	67.5967042136189
2000	69.02153303996263
2001	71.03643721898426
2002	71.83612452416097
2003	70.35215807072964
2004	70.81596213596568
2005	71.23865879396
2006	72.07485125001996
2007	73.44765028516504
2008	71.78518034938348
2009	72.97365459304989
2010	72.91301053730194
2011	72.60202143131502
2012	71.3401286677863
2013	68.06813172835905
2014	66.56744402200259
2015	65.82827711409122
2016	64.98289519355802
2017	64.59881210944219
2018	66.00757930153627
2019	66.20501384690861
2020	71.23809970070192
2021	68.11864374469516
2022	68.14801280076512
2023	67.87693767551019