Year	% of GDP
1970	27.986452529225392
1971	30.569404355812125
1972	28.858362043336072
1973	30.063573671571948
1974	31.79433298532375
1975	34.75842163760045
1976	37.09023603016536
1977	37.21986894029905
1978	31.778651588645562
1979	30.486830417702652
1980	27.896279679149426
1981	28.171325404848595
1982	28.333147838990914
1983	28.897137151206366
1984	27.519023230651985
1985	25.981593237577393
1986	28.809338869107354
1987	29.120896429842773
1988	29.675763909384955
1989	26.85130306673666
1990	22.835032092614497
1991	21.749883240706403
1992	20.877439604079733
1993	21.301003856670732
1994	21.62482362617889
1995	21.439087648914278
1996	21.822424412518775
1997	23.551001454430757
1998	26.503781528130943
1999	23.45192871801229
2000	19.799460882149475
2001	19.499038748764928
2002	19.389059198475845
2003	18.841570228342555
2004	19.58975976484839
2005	20.29922329931794
2006	20.868940266649165
2007	23.491403599904075
2008	22.485455554347887
2009	23.153019700685984
2010	20.637833443555206
2011	21.381928155480086
2012	22.305219903442143
2013	23.432055100822403
2014	23.708732054389685
2015	23.689573421106687
2016	25.058511858820587
2017	24.35633201859828
2018	23.774213417786427
2019	26.626821654090687
2020	27.436557058564382
2021	22.94585644405519
2022	19.68841261415615
2023	23.396051077098623