Year	% of GDP
1965	15.550050669969599
1966	18.16241487956093
1967	19.230769230769234
1968	17.514595496246873
1969	18.66720845184884
1970	18.539212386401886
1971	18.373837383738373
1972	17.475093086444602
1973	17.012111907198907
1974	18.62118467375329
1975	20.89631029117582
1976	20.620017714791853
1977	18.97931154760088
1978	18.454291990537346
1979	16.887320870008
1980	15.011905994409357
1981	14.98419451681589
1982	17.599246437816
1983	16.560745504630937
1984	14.7317578057616
1985	12.259740284553363
1986	12.676666835388934
1987	12.792586459319038
1988	12.112449125584085
1989	17.66840586889345
1990	17.9591360289688
1991	26.215381425594785
1992	24.492115232051294
1993	23.489170985333708
1994	22.988777601374466
1995	21.712274626583056
1996	22.704835670609324
1997	21.739134901044917
1998	21.64802908266421
1999	21.673137157395487
2000	20.9748604328103
2001	19.664297202457874
2002	20.36720579834602
2003	21.75521083200601
2004	21.57660310644735
2005	18.381678814758928
2006	17.54374751985229
2007	16.229267967175527
2008	16.203692783034526
2009	15.372901268314623
2010	15.269117247020455
2011	15.0723772029499
2012	14.993044919530258
2013	14.591664912786351
2014	14.546527181925779
2015	14.70244789879037
2016	14.418797883137497
2017	14.095865444631064
2018	14.135534315803438
2019	13.758802906570708
2020	14.445059421692449
2021	15.159889985297797
2022	14.915283565917658
2023	13.745030001572164