Year	% of GDP
1977	57.44893715900818
1978	54.78820547685993
1979	54.251280647484855
1980	49.92865714844373
1981	49.76012469904731
1982	49.87846872929978
1983	49.90146604717429
1984	47.766970985651824
1985	49.567616054103986
1986	52.94516416020885
1987	51.664575951114365
1988	51.53746583662969
1989	53.13458294008432
1990	52.04382963214496
1991	49.689540499981725
1992	51.11090537841249
1993	53.41858694301716
1994	54.063013965217785
1995	53.11250744425663
1996	53.61599049351095
1997	43.01983421637926
1998	41.819459017956646
1999	41.0455710006639
2000	44.60611190036353
2001	41.79634544394648
2002	42.240485316845046
2003	44.26534062781749
2004	45.422074779248035
2005	44.98844516577079
2006	40.52830945639586
2007	40.763271035386964
2008	39.91382365772166
2009	37.428797984294434
2010	37.36344861027816
2011	38.00779912399713
2012	38.07114600066679
2013	39.3978482613066
2014	39.884512719972555
2015	38.03873407612437
2016	43.08860735714247
2017	42.022335272451286
2018	45.60739413394404
2019	48.04130837241525
2020	33.45786552080073
2021	39.94721772412452
2022	41.119069776473154