Year	% of GDP
1977	70.98176718092567
1978	73.51033157135993
1979	78.50499398973557
1980	74.20804313637385
1981	76.14440939362075
1982	72.29930938351391
1983	71.11611265004618
1984	78.36950663857723
1985	75.30917289219515
1986	75.66430738119311
1987	75.68533808715321
1989	76.08719790986284
1990	75.68477574226154
1991	80.08813432931768
1992	78.34030234802188
1993	79.55465717981889
1994	80.20067505369745
1995	81.95129775444737
1996	83.95982266555832
1997	69.39119064614141
1998	70.0577472992235
1999	67.19530653173466
2000	66.54516143810353
2001	70.18777734096513
2002	66.27963013840534
2003	67.628400613748
2004	68.50802127816999
2005	69.18118785709929
2006	71.7706361110428
2007	70.51290503035315
2008	72.4396731901957
2009	73.26416856008238
2010	74.19946591440367
2011	76.72844808325348
2012	76.65407397043049
2013	76.79928432636257
2014	76.76711529874886
2015	76.10072053393192
2016	75.99424440830644
2017	79.29425416983337
2018	78.27486168138367
2019	73.85872989044422
2020	83.96196099696732
2021	85.57556139995954
2022	79.33832709113608
2023	80.4149666980507