Year	% of GDP
1970	101.91197798089769
1971	99.99237551434452
1972	100.70102454807306
1973	101.78032243214325
1974	105.98427310291643
1975	104.94672456475857
1976	105.51511876617977
1977	103.02699688132076
1978	100.13699872937174
1979	100.6208644293538
1980	103.30512128388949
1981	103.0551857820168
1982	102.78586550106917
1983	101.73794405238623
1984	98.95395958929322
1985	99.174889641725
1986	99.10339682548792
1987	101.04483820717417
1988	102.30163023830694
1989	104.40728824188423
1990	104.42641016704464
1991	104.22111567798267
1992	103.84947499041391
1993	101.71079300445504
1994	101.08780100248956
1995	101.12117554083042
1996	100.18049766661284
1997	99.82667909441753
1998	100.45755971747845
1999	101.93344893515945
2000	102.95561788127208
2001	102.27391714325249
2002	101.99118940380387
2003	102.20587685381157
2004	103.70021304644786
2005	104.80375950146492
2006	105.69452981252671
2007	105.77812613024726
2008	104.73547169505228
2009	100.87148597757647
2010	101.0248818645131
2011	99.72324662542314
2012	97.93483489541308
2013	96.07241076266047
2014	96.90230949208218
2015	96.96148380657681
2016	96.01496742700239
2017	96.39593218706021
2018	97.28481491603253
2019	97.06008688789278
2020	98.56096013440452
2021	99.03844423172897
2022	98.78837799516778
2023	95.87649951535309