Year	% of GDP
1972	19.744304289541304
1973	23.12158297813316
1974	22.58234130422368
1975	38.12805087347982
1976	42.82435769462574
1977	41.42033866367417
1978	46.99482444230363
1979	52.97496599183621
1980	53.63711715425848
1981	58.0787231873979
1982	53.16816163547718
1983	46.416165766739134
1984	49.54958136524848
1985	49.14364374773289
1986	34.509717616439
1987	38.33473266625581
1988	43.984622786008906
1989	54.544300832606496
1990	65.26363264079697
1991	56.939817768699875
1992	52.231848488026436
1993	52.09786555901794
1994	47.37893611006308
1995	49.41001594323417
1996	49.71496050166949
1997	45.18521402293035
1998	45.61125173802999
1999	41.71469117214403
2000	39.73194192074949
2001	35.79992293935086
2002	38.248462336932
2003	35.67723103739257
2004	37.343188026053994
2005	39.35533745630545
2006	39.63317533769232
2007	41.92462193051089
2008	39.22740540650818
2009	34.65524869514748
2010	37.37970218636374
2011	34.591878305741574
2012	34.66167962097151
2013	31.713650022212427
2014	31.952279295908014
2015	28.243097318138755
2016	26.779329585950144
2017	27.922967070311906
2018	28.1428001420737
2019	28.68120391176377
2020	12.805830947690144
2021	18.719673680663607
2022	28.023181203468656