Year	% of GDP
1972	21.171189073004268
1973	22.01439629468631
1974	20.665999699945544
1975	18.874721892246
1976	17.73263658008179
1977	18.354830919927885
1978	19.158553175836396
1980	19.69424242236453
1981	19.23403601269805
1982	18.510966464815304
1983	17.86284417662622
1984	16.841518792330675
1985	17.67666554838935
1986	17.1803216090225
1987	16.552153446496185
1988	17.598912184008146
1989	17.897013702004756
1990	42.43432683581666
1991	43.05083437267357
1992	44.172040034101215
1993	45.26292291217423
1994	42.31400953965904
1995	47.258082962224854
1996	42.41854904506311
1997	46.62519511875135
1998	42.70555766391753
1999	47.66556286378311
2000	48.585271838508575
2001	51.424094120965115
2002	53.72732518223566
2003	54.06966944260875
2004	55.024006088874444
2005	58.81945182602689
2006	60.02766583111251
2007	62.50279457950836
2008	25.805875947562118
2009	26.01451093845388
2010	25.31011881630353
2011	25.80812784923371
2012	25.69042388585122
2013	25.727707085980022
2014	26.00331921340419
2015	24.302655922597832
2016	25.24612566836344
2017	25.05753436069164
2018	25.044188082385993
2019	24.460782421050485
2020	23.343122604206705
2021	23.82232545920615
2022	23.374218161345606