Year	% of GDP
1975	1.9244159105045486
1976	2.1380944463283766
1977	2.1423611060128427
1978	2.30297533609808
1979	2.7469059372630675
1980	3.194629288781174
1981	3.124838657521475
1982	3.190649444555871
1983	3.2049260053856923
1984	3.2398227193805216
1985	3.1340821621205937
1986	2.881107101822357
1987	2.8643780974830224
1988	3.0724885787902503
1989	3.3824423094104543
1990	3.338041006831526
1991	4.0245554516503645
1992	4.048876771274424
1993	4.154587384328872
1994	4.350446917813498
1995	4.730326915924091
1996	4.6855605486841725
1997	5.1827354735589335
1998	6.225454155612545
1999	6.926507810423938
2000	7.658710888392838
2001	7.711747783763465
2002	7.8683812992983775
2003	8.026920841350387
2004	10.369961016454642
2005	12.109614660907791
2006	13.608366609176386
2007	12.880958178927953
2008	13.480503472450053
2009	10.874203037329059
2010	11.69607710178173
2011	11.86395533017584
2012	12.335280049540916
2013	12.27356128994248
2014	11.687098847978593
2015	11.357795762813602
2016	11.23154839779565
2017	11.113257266765322
2018	12.17705367868148
2019	12.177175131509536
2020	11.93272225245677
2021	11.95443976332145
2022	14.498876326094463
2023	14.533467484147216