Year	% of GDP
1960	28.193325661680092
1961	26.129032258064516
1962	24.214792299898683
1963	21.181818181818183
1964	19.902912621359224
1965	17.121418826739426
1966	14.624505928853754
1967	17.420212765957448
1968	20.352941176470587
1969	19.74012993503248
1970	21.336874723328904
1971	15.76
1972	20.710479573712256
1973	21.45101399600114
1974	18.326180257510728
1975	19.363997728563316
1976	15.706405148636224
1977	10.498969810982711
1978	8.357952920994949
1979	11.232371908440223
1980	8.466349295248763
1981	4.7558725525293974
1982	3.338307249193185
1983	5.5559177995848685
1984	8.04402704011295
1985	10.654485669643899
1986	16.57609705256036
1987	19.66260053619303
1988	18.18338349841514
1989	16.74263731518317
1990	16.877890410773478
1991	16.96354605856408
1992	17.225955492128616
1993	20.253919062007697
1994	25.25863592699328
1995	24.496445940890386
1996	32.112182172559464
1997	32.410290929187866
1998	33.87135175763182
1999	32.078338953731325
2000	48.802257619003775
2001	45.233016466731634
2002	42.61625189308666
2003	40.67904265111997
2004	39.30332512141074
2005	36.44921695071396
2006	24.65619049089574
2007	24.5250906044049
2008	25.029457299507417
2009	29.291865978504816
2010	29.47671798315733
2011	36.9366085502594
2012	40.35921817403706
2013	25.440783396728474
2014	28.23190216059761
2015	33.83170482336964
2016	31.19323914836203
2017	33.87687477996809
2018	33.454895448926464
2019	37.449599862531066
2020	31.525420486711486
2021	30.055119469623122
2022	34.66404355335874
2023	34.03675921516432