Year	% of GDP
1960	8.640321500334897
1961	9.236453201970443
1962	9.235967711657594
1963	9.64086471408647
1964	9.500232090360514
1965	11.518105849582174
1966	11.622641509433961
1967	10.880944425882614
1968	10.576923076923077
1969	10.4491126403477
1970	9.700380731666943
1971	10.333435771358328
1972	10.161483253588518
1973	9.852801519468187
1974	9.394184552419931
1975	10.480485473211688
1976	10.845665575209908
1977	11.727907588919342
1978	12.687162575463418
1979	15.067065735506041
1980	13.841551865394253
1981	13.290674337735817
1982	11.80164279758224
1983	9.028303941683065
1984	13.309599080478218
1985	10.56129957702922
1986	9.447474896737777
1987	11.12570752960381
1988	11.386515977903876
1989	11.94065921186848
1990	11.755481583922862
1991	12.074730859922154
1992	12.870501625192615
1993	13.370436668400416
1994	13.567906395021115
1995	13.572620150643433
1996	13.327266622014836
1997	13.903529000156881
1998	14.21887080675277
1999	14.797892543574703
2000	14.539299514918902
2001	15.724130219354349
2002	15.967890239371519
2003	16.521141422459902
2004	16.258536195667656
2005	15.974557500963332
2006	14.354232662416901
2007	14.058652503196647
2008	13.277374689752197
2009	14.708764840941463
2010	13.831218450537952
2011	13.777101532623561
2012	13.43962696501459
2013	13.841514336266123
2014	14.70704664024094
2015	17.49525822587272
2016	17.458252197337263
2017	17.021640026681602
2018	17.52564468672301
2019	18.14309200161599
2020	19.738634453061792
2021	19.33698458373736
2022	19.08991604519842
2023	19.279162055551357