Year	% of GDP
1970	12.7573166532525
1971	16.4584896353081
1972	17.5730871259509
1973	19.2995018193691
1974	47.811397583467
1975	38.1449645758838
1976	33.8879214109636
1977	30.3247382295186
1978	32.4359606220402
1979	36.9624941521813
1980	34.4935696763401
1981	27.2671984227087
1982	20.0016361862627
1983	16.239466364086
1984	15.1689761650579
1985	13.3620164339938
1986	5.62097656764036
1987	12.1574796528458
1988	11.6910176676536
1989	18.3952171882248
1990	23.9854435223543
1993	30.8421065078492
1994	25.8095921553796
1995	20.7724689741647
1996	20.9894625885333
1997	19.7567159419881
1998	13.3950142635049
1999	18.626607792413
2000	33.082196505073
2001	24.0565282820387
2002	22.901560055169
2003	24.1803070892105
2004	27.2443648124195
2005	34.4823160181386
2006	34.7791285091133
2007	29.1825071901049
2008	33.5227511829978
2009	20.3362743181973
2010	23.0680430493324
2011	25.3461464486072
2012	21.1187189284557
2013	24.9467390294435
2014	24.8607811408678
2015	15.2302994765894
2016	13.1358103039789
2017	17.4677964309489
2018	34.2395948033408
2019	27.8006661533715
2020	23.2391718001181
2021	30.4480600937139