Year	% of GDP
1970	3.1090121171888034
1971	2.844840325740132
1972	2.733751334418603
1973	3.944025896689332
1974	10.130569655796585
1975	7.7705200611362315
1976	7.8436392529549215
1977	6.688693244973322
1978	6.339837016767144
1979	13.083702825510757
1980	12.862296584459108
1981	9.390296254267541
1982	7.666654760883772
1983	8.927330759373664
1984	8.581155072897012
1985	8.039009370239595
1986	4.245479551446398
1987	6.334777911911921
1988	5.509542491448654
1989	5.364264144310434
1990	6.088168732707696
1991	3.5345045974755287
1992	3.357482397083177
1993	2.7143236307940404
1994	2.414577247708239
1995	2.8116898695939385
1996	3.1199883009839007
1997	2.6703973230837943
1998	1.6428167113591554
1999	2.677675408938238
2000	3.9970243145831543
2001	3.2175392009385364
2002	3.7753034771706306
2003	4.112779956604983
2004	5.041226541314306
2005	6.4099666018041335
2006	7.34083057586291
2007	6.904343092839368
2008	7.515355899304538
2009	4.184367013147568
2010	5.3438577819736555
2011	6.960414021679503
2012	6.196291283158148
2013	5.604119475506299
2014	4.782543703118023
2015	2.3734250164206054
2016	2.2697352136842395
2017	2.7162870787016047
2018	3.472898204246785
2019	2.7190072063342603
2020	2.5591003838744357
2021	6.297113731525826