Year	% of GDP
1960	11.569354335049162
1961	11.993605399965773
1962	12.703921542593296
1963	12.918436594927297
1964	13.07847296605711
1965	15.868385000555724
1966	17.12445480963194
1967	17.585993773304715
1968	18.398245865190084
1969	19.494186562443808
1970	20.372489759786216
1971	20.921129950026483
1972	21.73598077780746
1973	21.78773691781282
1974	19.158647985361544
1975	21.331534579577724
1976	22.520938521617524
1977	20.623303115032915
1978	21.645131681500168
1979	21.952490570657535
1980	20.597592765429972
1981	21.27071047674106
1982	22.129832181207117
1983	24.075099753107448
1984	23.83238756175048
1985	23.028606417971865
1986	24.94164692138552
1987	25.265111412221856
1988	25.455485853517935
1989	26.779582080780457
1990	25.030882339498834
1991	22.595443894699915
1992	25.578080852212846
1993	25.67898859563265
1994	27.9249964161512
1995	27.509854542786886
1996	27.304474188711506
1997	29.296638864388377
1998	27.243669951401476
1999	25.828593739106555
2000	25.44872092341513
2001	25.158762778125126
2002	25.261065799274576
2003	25.598248067443556
2004	27.03409547557242
2005	28.901755517046016
2006	30.73287857276572
2007	32.82097670334726
2008	33.07681690523013
2009	34.8535991787598
2010	35.37678876828347
2011	35.90710342471254
2012	36.72101643970341
2013	37.97895382937459
2014	39.57758232057883
2015	41.577469905347435
2016	42.293059860751114
2017	41.43392824796657
2018	41.077605130263976
2019	41.47790293236548
2020	44.74826474982699
2021	42.52448501725276