Year	% of GDP
1972	26.74577091358946
1973	26.905262796991774
1974	27.555104013592054
1975	33.37262430165982
1976	33.77657583731938
1977	37.11763047912556
1978	37.71668401257649
1979	35.88256921045471
1980	37.62806062282983
1981	38.3570877138759
1982	37.681110830794864
1983	38.97037894294017
1984	37.63585352634187
1985	38.47700731459463
1986	36.62707063141133
1987	36.60367068023621
1988	34.83872159973926
1989	34.25652471452813
1990	34.753958641269136
1991	34.904214507900704
1992	36.927066089454655
1993	36.57618828647612
1994	36.7715311049844
1995	40.89269416115722
1996	40.74885107419933
1997	40.85184282166162
1998	41.535626957074335
1999	40.323214808972594
2000	40.56719762836788
2001	40.77568367256649
2002	40.601974467810166
2003	40.44762616888281
2004	39.603901283841324
2005	40.64438984912842
2006	38.840144906905024
2007	39.181260309820146
2008	38.68297823527623
2009	39.80357044679022
2010	39.08472606058362
2011	39.46753622561918
2012	39.78680588789491
2013	39.79081643970263
2014	39.71959433667285
2015	39.43917680341051
2016	39.52131569439462
2017	39.930504650054225
2018	42.213535652769465
2019	42.16176573218317
2020	40.72260131215439
2021	40.76295527720373
2022	41.07287853577371