Year	% of GDP
1970	18.352059925093634
1975	15.947467166979362
1976	16.11814345991561
1977	17.624810892586993
1978	25.320729237002027
1979	29.720380513116172
1980	23.117670749330742
1981	17.924735476142942
1982	16.245931129004624
1983	24.77775981897527
1984	21.111377655928717
1985	14.761059190031153
1986	8.459271168274384
1987	10.802152526696377
1988	18.12019322443272
1989	17.808019596891366
1990	10.060604257599318
1991	9.45808192936414
1992	11.480824232981737
1993	11.179393802218936
1994	10.169899075074442
1995	10.921106575200696
1996	12.225090561668464
1997	12.549786025078498
1998	14.022982242819124
1999	10.757606166990948
2000	17.233542863111506
2001	17.672837298994363
2002	15.428343980371324
2003	13.969963139698653
2004	12.884061044572585
2005	10.563443851546102
2006	10.058133961550702
2007	8.58541585618601
2008	7.100960115808065
2009	5.712230092664286
2010	7.0872591836771
2011	7.498988918732151
2012	7.301145252516099
2013	6.807400056925456
2014	6.050175653609621
2015	5.55170891351365
2016	4.445360722538693
2017	5.212714191556849
2018	7.88328586091225
2019	8.633845718590978
2021	6.151086431345184
2022	4.771529107929616