Year	% of GDP
1974	2.61180768930811
1975	1.91711979022559
1976	2.9654058240605
1977	4.98964256844788
1978	4.53405314575359
1979	5.33944577287344
1980	5.77134166972366
1981	6.77674685686654
1982	7.15570951032865
1983	9.03444385753996
1984	12.5546223106374
1985	13.0395225459612
1986	12.7433135187019
1987	13.2145308461192
1988	14.4149337063544
1989	15.9700311616172
1990	16.0740991530445
1991	15.9199092838791
1992	14.5455434030437
1993	15.2943169244381
1994	16.2711918310691
1995	20.8817607372616
1996	18.9119975738864
1997	19.9866312756307
1998	20.4966379485471
1999	20.9872341323173
2000	21.7793890133235
2001	24.179592705355
2002	26.2081249737496
2003	26.0386276764885
2004	27.9134032883374
2005	29.3438304968623
2006	31.1657016961389
2007	32.0428330535648
2008	34.0421917464818
2009	36.1910375652522
2010	40.9613226292342
2011	42.4702411629772
2012	43.0006693750914
2013	41.7947548053392
2014	43.7361238704853
2015	44.4069718062837
2016	37.7986426672318
2017	40.4489561448676
2018	40.0247365906979
2019	39.0344709350066
2020	39.161059242521
2021	39.0820163295701
2022	38.9555684288032
2023	37.6413802339103