Year	% of GDP
1973	23.677162348059262
1974	24.14570032682133
1975	24.48324173918649
1976	25.77153443725163
1977	26.784021676376273
1978	28.099371453245887
1979	28.28015437844587
1980	29.621372009116154
1981	28.971674434287202
1982	31.50050245637162
1983	33.59725321150503
1984	32.211869830962826
1985	31.603319308735234
1986	34.239397609735484
1987	33.85391891566998
1988	34.361118649375975
1989	35.43562201398233
1995	40.61034773626573
1996	40.8697922796914
1997	42.29971274051082
1998	38.71059741437043
1999	39.137913942013334
2000	37.13171244535599
2001	37.00348000301809
2002	36.64482418890185
2003	36.436830695094805
2004	35.97763301313279
2005	35.70570406310027
2006	36.8170193757041
2007	37.86270316101944
2008	38.10058182838682
2009	38.90903181912332
2010	38.6909309459303
2011	38.40277620251586
2012	39.87647555924686
2013	40.242410593623454
2014	39.90185360060209
2015	39.77273756988682
2016	39.951838285331625
2017	39.46388583437637
2018	39.36228203007895
2019	40.08686173171881
2020	40.580294307901845
2021	40.59799951106917
2022	40.27845692208731