Year	% of GDP
1970	20.961411177021542
1971	20.523877752218205
1972	20.72616598583478
1973	24.75580324197776
1974	31.628383021670842
1975	27.08127367900873
1976	29.10542835071456
1977	28.939307500530447
1978	26.669085937098586
1979	26.984825826245938
1980	24.40553770717039
1981	23.129343144359588
1982	23.702525660246803
1983	24.771153030485973
1984	27.56805064765122
1985	26.754655069757195
1986	25.414084682106985
1987	25.267644227078833
1988	25.180936578387286
1989	26.026796608015363
1990	24.91137633126676
1991	22.712070077750994
1992	23.37414895041433
1993	24.907452517471253
1994	25.799105470238704
1995	25.215150643603003
1996	25.88261667946896
1997	25.204398970007503
1998	24.906835346183932
1999	25.326096958728893
2000	26.86190894951815
2001	27.274448472474884
2002	26.86927320660143
2003	26.183032485810603
2004	26.379422320712337
2005	27.4092063694058
2006	29.402298038501723
2007	27.45279311579355
2008	29.19264558232932
2009	28.122833002540027
2010	30.416032297350476
2011	32.17780691571584
2012	31.607414301677935
2013	31.70968714370641
2014	30.51858939046901
2015	29.357599020272367
2016	30.798058891017227
2017	32.23129899802255
2018	32.962536890699454
2019	33.030353356273565
2020	29.08256854575039
2021	29.751335220892095
2022	36.097201056193164
2023	33.41473199101216