Year	% of GDP
1964	21.953392807881244
1965	21.337862476191994
1966	22.82733300437259
1967	21.439089045464055
1968	20.709243130742927
1969	21.849273673882287
1970	24.51909439450262
1971	16.929140635974562
1972	20.920609783758184
1973	21.543385165244615
1974	27.384064403086505
1975	22.225743961247314
1976	27.59092826595711
1977	25.337948179600183
1978	21.463122809873926
1979	21.31176309920121
1980	23.047067681488613
1981	41.57448361229477
1982	39.66916014502596
1983	30.052892042482664
1984	25.91073116342968
1985	32.72575771073829
1986	13.520880706113985
1987	5.345707322230381
1988	3.504354944012479
1989	0.5801102074017499
1990	-2.1739976705018775
1991	-1.7131868341209808
1992	-3.4900346531989563
1993	-0.48553868662383326
1994	5.223157710963703
1995	15.069724280638178
1996	21.796830372888987
1997	22.7295721323712
1998	24.785934970110134
1999	-5.145391648108399
2000	-0.4609917932805337
2001	2.74034322097693
2002	9.571805956915371
2003	6.560762553616698
2004	7.996807369743747
2005	12.448163482579375
2006	17.388235992340505
2007	18.021448470955075
2008	21.412896612804833
2009	14.318942233821113
2010	17.412654346359812
2011	17.82869476888617
2012	17.845855808145565
2013	18.62690711141844
2014	21.26570539939758
2015	17.573466620993226
2016	14.237934390761605
2017	11.092374812509117
2018	11.978994454911676
2019	14.625604438477364
2020	13.081701250531392
2021	12.22355118963683
2022	12.647241130015704
2023	4.678373903055755