Year	% of GDP
1974	2.611807689308114
1975	1.917119790225594
1976	2.9654058240604995
1977	4.989642568447879
1978	4.53405314575359
1979	5.339445772873442
1980	5.77134166972366
1981	6.776746856866538
1982	7.155709510328648
1983	9.034443857539957
1984	12.55462231063737
1985	13.039522545961166
1986	12.74331351870194
1987	13.214530846119226
1988	14.414933706354422
1989	15.970031161617202
1990	16.074099153044457
1991	15.919909283879086
1992	14.54554340304366
1993	15.294316924438064
1994	16.2711918310691
1995	20.881760737261615
1996	18.911997573886424
1997	19.98663127563067
1998	20.496637948547107
1999	20.67917223272669
2000	21.492353541891834
2001	23.859550966749847
2002	25.86441916199674
2003	25.69397353354758
2004	27.555897039870175
2005	29.030325182444923
2006	30.876878715910948
2007	31.787358196084863
2008	33.81819940185996
2009	35.98535638498093
2010	40.76792762533028
2011	42.25898988981347
2012	42.77812473789992
2013	41.58143838440896
2014	43.51296712953674
2015	44.204161716867695
2016	37.64434227978509
2017	40.30273623039158
2018	39.88122223143781
2019	38.896327659640065
2020	39.026277938528594
2021	38.959076589984754
2022	38.83977466266222
2023	37.531786079210946