Year	% of GDP
1970	2.7448837647070636
1971	2.7365552334864622
1972	2.664775187286522
1973	2.821890947440412
1974	3.066919557693857
1975	3.0500240353674686
1976	3.1524906092035736
1977	3.143979271390687
1978	3.1691350811198555
1979	3.161999614219218
1980	3.404463870530396
1981	3.5125383105210197
1982	3.7126486778253334
1983	3.5460911166509086
1984	3.6800757327634472
1985	3.6159033205937203
1986	3.921649453119969
1987	4.160430866664222
1988	4.280322562021465
1989	4.367373264772091
1990	4.750628520732271
1991	4.902657675762153
1992	4.873068970139928
1993	4.866251036981699
1994	4.920425261259787
1995	5.067025401516218
1996	5.22724335385999
1997	5.2938235353003344
1998	5.290561620934805
1999	5.329628055971523
2000	5.475783557696015
2001	5.18651537857273
2002	5.183133258131735
2003	5.228076989821978
2004	5.632509721944665
2005	5.742878969293866
2006	6.037836111230886
2007	6.505223040905328
2008	6.915948170319296
2009	6.839272852211011
2010	7.174952966522769
2011	7.459807395382992
2012	7.533895555875908
2013	7.455384089585506
2014	7.505167184284788
2015	7.3512404369783875
2016	7.329408571044913
2017	7.530045469923501
2018	7.419552347165286
2019	7.429544750492101
2020	6.0807426639405495
2021	6.254548758014159
2022	6.820174041027283
2023	6.841472353135579