Year	% of GDP
1960	8.99312458715278
1961	9.15603150017123
1962	9.33167294545842
1963	8.83189118618018
1964	8.0512811057284
1965	7.58724717722602
1966	8.43530028594507
1967	9.417795932551371
1968	9.26845427468793
1969	8.63326379509104
1970	8.03274358404085
1971	6.9430696093606095
1972	6.51975692434716
1973	5.8938705911674
1974	5.95411119676015
1975	5.622679096133361
1976	5.191071429025549
1977	5.15561735127125
1978	4.94308724791688
1979	4.95199153527265
1980	5.15353746651636
1981	5.64654125624258
1982	6.81405709441284
1983	6.32114425976717
1984	6.236416529638969
1985	6.4532192046686
1986	6.626522657898421
1987	6.42027402288488
1988	6.0712777020948
1989	5.87120600804653
1990	5.60517529438794
1991	4.8834293977631305
1992	4.97046680768284
1993	4.60435029507644
1994	4.215264675177901
1995	3.8602457917388997
1996	3.55498220635218
1997	3.40556224418855
1998	3.20155849896996
1999	3.08567678324746
2000	3.11224214697679
2001	3.1238098026670302
2002	3.44761809928778
2003	3.8271610447362296
2004	4.0163127364069195
2005	4.08923187524508
2006	4.0413423016603796
2007	4.07335051467688
2008	4.44659552156261
2009	4.87576835879774
2010	4.90402333182935
2011	4.82244188326366
2012	4.4617099699335
2013	4.03266107017529
2014	3.69096076109336
2015	3.4814282152277802
2016	3.42258797486987
2017	3.32054091174119
2018	3.32386640421184
2019	3.43456772038844
2020	3.6960098282307
2021	3.4579772192344898
2022	3.4549197977343895