Year	% of GDP
1960	0.6402561024409764
1961	2.883659264169705
1962	3.3342443290516535
1963	8.871745419479266
1964	9.017169122617277
1965	7.601635795044503
1966	11.724978895037989
1967	10.96985383678441
1968	14.413137220154765
1969	17.87409047769693
1970	16.37345347922477
1971	14.41826643397324
1972	16.779529957588394
1973	22.392488194959565
1974	21.531941808981657
1975	19.809173337380024
1976	24.829335028467195
1977	28.255974548718033
1978	30.390188634240396
1979	30.175327060116103
1980	25.37161643394227
1981	25.15069519104164
1982	26.63432635206139
1983	30.42636541368183
1984	32.89422620569961
1985	33.437535813692776
1986	36.48842850179345
1987	39.25338009397048
1988	41.20492045259177
1989	38.64210159358946
1990	38.79735455697705
1991	38.915569089714616
1992	38.0116725180586
1993	38.13620922307256
1994	37.97294126553652
1995	37.99831940772852
1996	36.360450800844
1997	36.39043265169968
1998	38.28241675171947
1999	36.31128762555943
2000	34.599892209496616
2001	32.844696475198134
2002	32.162586574709394
2003	33.7811587539484
2004	36.018635039086824
2005	34.82043616372611
2006	33.598637233536344
2007	34.08118420770071
2008	33.41745677695649
2009	33.668915616630784
2010	35.35999090284431
2011	34.42856883666159
2012	34.04642863045178
2013	34.51736455113078
2014	34.83887846721626
2015	36.375915519495415
2016	36.804176703357506
2017	37.03555410143127
2018	35.924900349943414
2019	34.2895168355843
2020	35.56972127237732
2021	35.882200664984616
2022	33.15201002287982
2023	32.17388726365624