Year	% of GDP
1961	2.06009358525541
1962	2.477432835246873
1963	2.948774392739257
1964	2.9294960687602996
1965	3.2135155935482733
1967	2.9841465360536072
1968	3.0308681980952925
1969	3.0612445727986124
1970	3.3430411480156255
1971	3.5199024288337006
1972	3.2665230321803187
1973	3.063543992941629
1974	3.750679155051904
1975	4.33245090205013
1976	4.392687653534603
1977	4.311236636180588
1978	4.042977034936364
1979	3.2636204812562104
1980	3.0241700681529236
1981	3.3435534263326736
1982	3.498924310721258
1983	3.483638042753974
1984	3.229667523108359
1985	3.2873872323922604
1986	3.480799009933402
1987	3.334155128469455
1989	2.7410195167530906
1990	2.4502670120092738
1991	2.2097000997264136
1992	2.4046051823002803
1993	2.2629976887956826
1994	2.2300243118590926
1995	2.1492876049373315
1996	2.066933542933659
1997	2.0516699179637197
1998	1.906592812678824
1999	1.969206215396179
2000	1.8947551946518488
2001	1.974383902380603
2002	2.019532704451946
2003	1.9883874019745051
2004	1.9329448994131855
2005	1.9265248041416736
2006	1.8916091127715435
2007	1.8541547499281257
2008	1.867578609996883
2009	2.0505939186109705
2010	1.9031082346803843
2011	1.829109572488579
2012	1.8768952051138559
2013	1.9180017263118934
2014	1.9322365894849136
2015	1.9504966377770998
2016	1.9547197634393902
2017	1.881965846322002
2018	1.8117024475399484
2019	1.8393198843283105
2020	1.9396194987659916
2021	1.762723570388945
2022	1.8677175647473256