Year	% of GDP
1964	12.419404765470851
1965	12.822676156755374
1966	14.71507397029647
1967	18.673330304407088
1968	18.517752213854173
1969	17.98982432562158
1970	19.681835644186776
1971	22.70365588689108
1972	21.759234653202235
1973	20.449732437663666
1974	19.11944942019421
1975	20.213094342775968
1976	19.9800460924601
1977	20.969409645679875
1978	25.076473486751915
1979	19.171315766886963
1980	18.322759476061602
1981	18.611326109391126
1982	19.027784500012814
1983	18.114589118029155
1984	17.153242957959538
1985	17.27142511377659
1986	19.635927744035854
1987	19.626124044838278
1988	20.446875578704564
1989	19.458099658400236
1990	20.648197627687033
1991	19.03009713782397
1992	16.581370091383636
1993	16.9376161081051
1994	18.873071478757534
1995	21.385586619378614
1996	16.00905816586676
1997	15.387900762417356
1998	15.67521328543848
1999	15.591431479488612
2000	16.708806513510492
2001	18.151557358650724
2002	17.23687984909786
2003	15.838209125078858
2004	16.259223481534203
2005	18.699111762524502
2006	19.42443802257845
2007	19.964729107178798
2008	18.86492381571433
2009	18.286491625153175
2010	20.847057646283805
2011	20.708639058030794
2012	21.585038233206934
2013	20.78578553512666
2014	23.884733674393114
2015	22.091036772420562
2016	19.391738073316212
2017	19.895722184842015
2018	19.097995387089526
2019	18.961570278246334
2020	19.321584460017526
2021	19.686257395660103
2022	18.718208842683534
2023	17.747678962296348