Year	% of GDP
1970	19.078584679747024
1971	27.23059433812441
1972	31.22537566855419
1973	28.692604724868453
1974	21.39075843651332
1975	19.991681681909604
1976	24.7038971239268
1977	24.893440326501175
1978	23.031552164212503
1979	25.0452557789452
1980	23.130380757848148
1981	20.37421704619888
1982	19.613746434111544
1983	20.714242772030325
1984	21.083754341046056
1985	26.625147493730672
1986	26.248975863606272
1987	19.570367858669666
1988	20.667111092260583
1989	22.260025366067197
1990	24.029315677240245
1991	27.05858140416803
1992	27.592001522352167
1993	26.034855974611858
1994	24.746357299747583
1995	24.339035284522755
1996	24.756075702488452
1997	25.29431938022399
1998	25.577170823632798
1999	25.12804108685035
2000	24.213220748605575
2001	23.929394182862126
2002	23.105761189373887
2003	23.429430887979215
2004	24.378438517079577
2005	26.642071089466
2006	27.938244642190917
2007	27.166631500673173
2008	24.263882984949493
2009	24.437520691521968
2010	24.84675295184151
2011	25.104510323141266
2012	24.20837008236718
2013	25.058599232257638
2014	26.863394198871333
2015	27.186912704910416
2016	26.78222553199452
2017	26.62599633840193
2018	26.803531848097684
2019	26.94039486920942
2020	28.89908682384541
2021	29.269769887688255
2022	30.885503259211383
2023	31.173010944285867