Year	% of GDP
1970	100.32504921112447
1971	100.59456745874998
1972	100.77757688817212
1973	101.00957058004252
1974	101.75552698580756
1975	100.57613229434554
1976	102.81019376158886
1977	104.69999238107373
1978	100.3112314171261
1979	102.63606123584653
1980	102.76891048153259
1981	102.34944064232742
1982	100.5763899387295
1983	100.2576317669936
1984	99.93885946325362
1985	100.71666762164968
1986	99.41519444397045
1987	99.59388518999685
1988	100.39039013613564
1989	100.60387916878312
1990	100.54486521631583
1991	100.4437641746114
1992	100.77756128607267
1993	100.57028181886434
1994	101.22160920088565
1995	101.29137995710857
1996	101.41144821916055
1997	100.57677422281117
1998	99.96279029212677
1999	99.59308430714302
2000	99.01339603555098
2001	98.24809042127998
2002	96.02126215768331
2003	97.47176407944606
2004	96.81434065175463
2005	96.98124605160923
2006	96.08386762298962
2007	95.34483608006636
2008	95.56486748060699
2009	96.94109948889063
2010	96.60231018507002
2011	97.41678179630351
2012	97.2976124753117
2013	97.3021967199551
2014	96.73083941827679
2015	96.25004825438509
2016	96.16928259005427
2017	96.83681750907314
2018	96.99951273650403
2019	96.36614324276096
2020	96.52297683159001
2021	99.23712635297744
2022	99.34460769481277
2023	97.3652484273454