Year	% of GDP
1960	8.194997022641099
1961	9.026469156677395
1962	9.4208198485632
1963	9.914209452630313
1964	9.948606237004169
1965	10.630322774874722
1966	11.35269559203441
1967	11.502029121467405
1968	11.989356251727642
1969	12.136674274446715
1970	12.238890481109292
1971	13.405980191752153
1972	13.755269670207003
1973	13.509995654783465
1974	12.82582613832398
1975	14.133248382205231
1976	16.12759928876055
1977	17.26701444393364
1978	18.590222697818593
1979	19.403940260811712
1980	18.98098282384384
1981	16.9403730649432
1982	18.47287746171475
1983	20.063453012133124
1984	20.31587198472306
1985	20.632545025402607
1986	22.48097764341272
1987	22.58669990897808
1988	22.648054239056787
1989	23.295257273426927
1990	21.885447812229188
1991	20.471254931670885
1992	21.560797661726923
1993	21.5202534369768
1994	22.020292869419308
1995	22.649009192644463
1996	23.10866416418644
1997	24.725627562578477
1998	24.65629821183979
1999	28.74268596025749
2000	29.32378142645914
2001	29.339490239936143
2002	30.202461866421483
2003	29.449274295599114
2004	31.4219328559292
2005	32.76333281458559
2006	34.06226559532221
2007	36.83405633488783
2008	38.37633184465836
2009	39.40811374635463
2010	40.03949196636561
2011	39.80455918002356
2012	39.2446280885759
2013	38.893178683102896
2014	39.652210277214444
2015	41.3961269806976
2016	42.46426588632529
2017	43.31791835911704
2018	43.359599382013
2019	43.87679917838611
2020	47.41008108945874
2021	46.11339550130321