Year	% of GDP
1976	19.6755619514757
1977	17.025452939103808
1978	15.404607053263966
1979	15.808100160998094
1980	10.369751411184849
1981	12.1490884416145
1982	12.875680728147662
1983	11.325997858776041
1984	11.928529272905605
1985	12.605580763640829
1986	12.571847812255871
1987	11.980546922904335
1988	10.80181400355453
1989	10.263327958597628
1990	10.742781771138464
1991	9.836459904228082
1992	9.879626214637598
1993	9.029413611931188
1994	8.550958910505216
1995	9.075920696586417
1996	8.942677325506999
1997	8.198655989334796
1998	8.01967920304773
1999	4.929974136865026
2000	5.6292176473366435
2001	6.066321364526781
2002	5.122449321693671
2003	5.108662835705495
2004	5.206085686696269
2005	4.911811066951974
2006	4.9064477049401
2007	4.3759869284631145
2008	4.074876694787057
2009	3.880639986838317
2010	3.6417421912799517
2011	3.703647696788418
2012	3.6572706220554183
2013	3.3305865488817235
2014	3.1919490646957294
2015	3.0719634338711823
2016	3.0972700058084985
2017	2.994748985431237
2018	2.563857057436601
2019	2.7072414412584846
2020	3.1418616360047587
2021	3.280236086774003
2022	3.5574603374685307
2023	3.8380096913082036