Year	% of GDP
1969	26.102200422151068
1970	28.092846781739254
1971	28.247292836875324
1972	26.150074371227078
1973	24.91572447914839
1974	22.441283441312194
1975	22.434129659025352
1976	21.45053263638652
1977	22.66117414720165
1978	22.71818541532263
1979	21.990694640626106
1980	22.565398661542215
1981	20.694365851741694
1982	20.070740223837525
1983	19.96492247063705
1984	20.470377049068684
1985	21.216518164776932
1986	21.7917054763377
1987	22.097994309515986
1988	23.55611751662202
1989	23.195676308971393
1990	22.84694007982208
1991	22.253841495737156
1992	22.040013606754975
1993	21.252350677429067
1994	20.69123184365212
1995	20.92933633138824
1996	21.571273122959738
1997	21.68157899015299
1998	21.84607971189084
1999	22.917615309243573
2000	22.5341642939158
2001	22.14364127243033
2002	21.08345622055446
2003	20.599442288566916
2004	20.29224275722388
2005	20.41340901788583
2006	21.040944596319193
2007	23.293441219697335
2008	22.117033736198195
2009	21.305866122955884
2010	19.6965833159936
2011	20.13733953093599
2012	18.761313759062492
2013	18.356365155958773
2014	17.591577818809938
2015	22.105975582891794
2016	20.001072935622453
2017	20.14100191561019
2018	20.425795265295154
2019	21.254158697751073
2020	21.71129775400801
2021	21.18168546049964
2022	20.85109890052569
2023	20.493363221240788