Year	% of GDP
1963	1.296083139016473
1964	1.8718912539709092
1965	1.4537414959869224
1966	1.644629236589984
1967	1.507319453850643
1968	1.0312435922186132
1969	1.0556668654252255
1970	1.6839080435781855
1971	1.9256648624975
1972	2.7739464755034495
1973	3.2747737372509698
1974	4.582185304205969
1975	5.518386149235056
1976	4.27918820202911
1977	4.493256488576434
1978	4.657969781674424
1979	3.189052210736191
1980	2.7325821526556644
1981	2.301952761545363
1982	2.2810824157915492
1983	1.9865176814016658
1984	1.5530016067206858
1985	1.5254723315286207
1986	1.9829913702926603
1987	2.663408514895677
1988	2.2775323009093027
1989	1.8417135782629903
1990	1.6898959513736793
1991	0.643386
1992	0.7652949529190225
1993	0.9138187221396732
1994	1.007837150712998
1995	0.885382690861098
2000	0.7322111930949994
2001	0.4881732570952351
2002	0.4491829531838713
2003	0.749559613867011
2004	1.0681865796011059
2005	1.2010740104400515
2006	2.0697639170034483
2007	2.606571990448769
2008	4.961602318160892
2009	5.276529198630343
2010	3.697574183731255
2011	4.00023327974097
2012	4.773472761815662
2013	5.224634197761055
2014	5.685373801662651
2015	6.251342409957247
2016	7.361041992339515
2017	5.432805174247064
2018	5.770480502578097
2019	5.972071424530185
2020	7.411712105551413
2021	7.194080777072524