Year	% of GDP
1960	7.8431326277283695
1961	8.516176154586052
1962	8.98048080721811
1963	9.107454010428194
1964	8.536791908544357
1965	9.270091621466054
1966	9.515407717954066
1967	9.116728704041464
1968	9.82064342827666
1969	10.400128635488656
1970	11.236549701476447
1971	12.493437925829802
1972	12.922357680101198
1973	13.093863834112723
1974	12.91379979380569
1975	14.933733329920596
1976	17.887701698518196
1977	18.041785188055854
1978	19.695420697328863
1979	20.956736238373406
1980	20.54345895388712
1981	21.225462447398733
1982	22.68789891754308
1983	22.892668764796788
1984	24.282574644533756
1985	24.563665159554333
1986	25.801001096331845
1987	25.382359512824188
1988	25.275117440762617
1989	26.589814009750746
1990	24.91645656971862
1991	23.821744452682765
1992	24.698240250739467
1993	23.832055386716185
1994	23.647341404645513
1995	22.510774702358244
1996	23.402442036857753
1997	23.55532534622629
1998	23.677746857874478
1999	25.422862207347148
2000	28.339551157518265
2001	28.61941542541017
2002	32.30648907355375
2003	31.62626561864905
2004	36.19180385459677
2005	40.067980478057265
2006	43.62775243342684
2007	45.62776474571382
2008	49.55936668711599
2009	48.12444791120459
2010	50.555374978522416
2011	51.289233132528224
2012	51.8885076473311
2013	52.38570951697524
2014	51.88218735894363
2015	51.86752407721844
2016	49.10122541913407
2017	48.794021399068015
2018	50.33816274631743
2019	50.74246174063228
2020	54.505290246046926
2021	50.1421581396974