Year	% of GDP
1972	27.741148831130335
1973	28.243689098402225
1974	28.708122527016783
1975	29.30824468326463
1976	29.27185491937233
1977	29.684630614296363
1978	31.979543342593992
1979	31.914091608064478
1980	32.40389067069663
1981	33.503836251328885
1982	32.4486438443788
1983	31.9864052937317
1984	33.357868948877574
1985	32.91489453674904
1986	32.65232449184953
1987	32.685777490870336
1988	33.60692399197651
1989	32.90858640401386
1990	33.028808613129875
1991	33.3178287932521
1992	34.797170687664654
1993	35.083270689369186
1994	35.030835414630054
1995	42.82375590110909
1996	43.954943133833915
1997	44.17179903579708
1998	44.127408158460184
1999	44.35185320542134
2000	43.777187845612175
2001	45.53581388565872
2002	44.52226257570394
2003	44.08817624034525
2004	43.85254096728403
2005	43.5413113992351
2006	42.984044212542955
2007	43.00739596103176
2008	43.74727479134378
2009	43.89386038981125
2010	43.51166677661497
2011	43.569804222544285
2012	44.165889645992394
2013	44.8594733972564
2014	44.70695692132883
2015	45.12297831554682
2016	43.58107251250986
2017	43.55615537683952
2018	43.70528524251397
2019	44.08871934861229
2020	43.48150899609823
2021	45.016326317285134
2022	44.5626675191077