Year	% of GDP
1962	2.46238686059532
1963	3.42840311040308
1964	3.98846400145474
1965	3.93668940833281
1966	3.39595653549377
1967	3.37283676710963
1968	3.55822704091396
1969	4.57379389143551
1970	4.44341394773542
1971	4.59592613298336
1972	5.01638790495071
1973	6.08910668806874
1974	8.50934038795723
1975	10.7541252921916
1976	13.8870775024875
1977	16.5821711762652
1978	16.8058118048849
1979	15.5070847039121
1980	14.7818738741884
1981	13.8273118568544
1982	13.1606135707504
1983	12.795586581303
1984	11.9486564665567
1985	13.3449142360773
1986	13.904260074877
1987	14.4704169501628
1988	14.9014930218623
1989	16.4513369104833
1990	16.9069430252044
1991	12.4641286806039
1992	10.9260780586609
1993	9.7738383449955
1994	7.02602949344018
1995	6.78518013833302
1996	6.91233560097967
1997	11.5520785082807
1998	11.0192968304637
1999	8.9927658548168
2000	10.3363970535196
2001	9.70866810828925
2002	8.85871385120772
2003	11.3534781382915
2004	12.9534294603704
2005	13.2962037127745
2006	14.6778844337033
2007	12.7845581771528
2008	15.090956904862
2009	16.0831017980888
2010	15.6345262986983
2011	15.3703421373421
2012	16.6424591713295
2013	20.8210379838202
2014	23.4056081561129
2015	25.0377705622704
2016	25.8099456026526
2017	27.4216018903543
2018	27.1497137139349
2019	28.3478578907135
2020	28.673890528361
2021	29.5635414431106
2022	31.3166757831158
2023	31.5773918167753