Year	% of GDP
1970	73.55326844817968
1971	73.92087839007033
1972	73.38890520325569
1973	73.08231699545549
1974	74.1390055501428
1975	74.83862917498452
1976	77.09729544183057
1977	76.66190260356338
1978	75.96564476978754
1979	77.05730902638821
1980	78.93300749764525
1981	80.34832985760671
1982	80.20280341501945
1983	80.00951710601475
1984	78.35791085316276
1985	78.35548472670915
1986	77.37497622696638
1987	77.88440253083455
1988	76.95307410080953
1989	77.73152665862567
1990	77.59026809327005
1991	78.20413748656657
1992	79.78357596169377
1993	80.24731616774164
1994	79.43636546609764
1995	78.60235177642491
1996	77.953937322543
1997	77.21561890969596
1998	76.53045991586225
1999	76.39574097357328
2000	76.31523297795326
2001	75.81487974915584
2002	75.30698337140052
2003	74.70240543660083
2004	75.41483552604787
2005	75.41658713958054
2006	75.12918114049987
2007	75.33590134806826
2008	76.28091255753505
2009	77.56814358243487
2010	78.72181551567107
2011	79.1513711230791
2012	79.49925516727701
2013	78.86226494767689
2014	79.0081037528278
2015	77.974050452095
2016	77.27140575366558
2017	76.99519652608362
2018	76.81705249535037
2019	76.23067764045818
2020	78.09143796748911
2021	77.44855967078189
2022	77.3070247040762
2023	75.56613395408269