Year	% of GDP
1970	21.529766685037114
1971	21.461979606695916
1972	22.041354059561762
1973	23.75264271727896
1974	22.820338291368714
1975	20.943019452557603
1976	21.500367955842336
1977	22.07079744284412
1978	23.161315557987947
1979	23.396574115608615
1980	22.20009924308838
1981	23.292094844238335
1982	21.628757919693847
1983	19.817361019037087
1984	21.825750191609355
1985	20.380054937376723
1986	18.96153730767327
1987	19.66792362332047
1988	20.662710562671347
1989	19.782582630849642
1990	18.673941146429787
1991	18.500683982667564
1992	17.378009834313417
1993	16.865976322508537
1994	17.786682558599967
1995	18.775214866033956
1996	19.63493884414393
1997	20.792083672821615
1998	21.252505855722315
1999	20.9405989738109
2000	21.066162989835842
2001	19.911548490534997
2002	18.666351552747788
2003	17.814199586596832
2004	18.239222492989512
2005	18.66283751637629
2006	19.66228893932506
2007	18.023573647575034
2008	15.843306864196656
2009	14.288088047348436
2010	15.726270596604223
2011	16.729916493427076
2012	18.602934828786836
2013	18.82938661376784
2014	19.875956969693423
2015	19.694121888605967
2016	18.615737554791412
2017	19.06011450147345
2018	19.269034964250746
2019	19.5793214598798
2020	18.696592558782513
2021	18.388382270254855
2022	18.665309254728918