Year	% of GDP
1960	11.834317179049314
1961	12.77923868105029
1962	12.124232736355726
1963	12.716590966635005
1964	13.064050625131063
1965	11.997319034852547
1966	12.709535586699644
1967	12.454592631032693
1968	12.80579885231048
1969	11.948698522647328
1970	12.022376504670095
1971	12.313076678332804
1972	12.383808095952025
1973	11.667186768606646
1974	12.033392963625522
1975	16.09129109335091
1976	21.671073755784303
1977	20.755209903337956
1978	20.794502665264535
1979	21.32553229211998
1980	17.824771874669832
1981	18.225130568617896
1982	17.93838742386847
1983	16.47476222614151
1984	15.851528630313979
1985	17.192998232640846
1986	17.744086256000564
1987	18.43449414253351
1988	17.54975623759963
1989	17.341483216190927
1990	15.697549348497875
1991	15.573819597605418
1992	16.46483368608157
1993	17.9402510908716
1994	17.352914347319178
1995	18.034888381499652
1996	15.797244496597019
1997	17.018646262748394
1998	14.304671604045552
1999	15.401886989642962
2000	15.901644114606592
2001	16.10308184696558
2002	15.826524873749491
2003	15.632291612951764
2004	16.147933012370956
2005	16.793477965490187
2006	16.138694457556827
2007	15.921803089509929
2008	15.233147315684493
2009	16.750845719461086
2010	16.5869372261684
2011	17.22104006028117
2012	18.227959119015196
2013	18.328575020397267
2014	19.105121153842315
2015	18.156437276404553
2016	18.361725713251737
2017	17.981973983697376
2018	17.995761510060348
2019	18.178936569030096
2020	19.40498595633579
2021	19.00116652428324
2022	19.217792172057756
2023	18.719396034161615