Year	% of GDP
1970	3.1237577861691825
1971	3.4551408516783573
1972	4.255620296171793
1973	6.124886876084894
1974	16.794310244178437
1975	13.593811922032305
1976	14.852171151264042
1977	14.82038399909355
1978	13.204103008467026
1979	23.529686648718197
1980	22.30942493273102
1981	17.44645003508738
1982	12.564145043382677
1983	11.705843215132429
1984	10.930150354013001
1985	9.905265540239597
1986	5.8553194848508845
1987	7.66810508259023
1988	6.9540723529535695
1989	9.327308754249973
1990	11.507143736704485
1991	6.9708911229262895
1992	6.594010686267404
1993	6.452038379311598
1994	6.204735993258243
1995	6.496425844885179
1996	7.246106583197449
1997	6.18689167666039
1998	4.102819954997609
1999	5.185117437948727
2000	8.07646779981211
2001	6.8181052626020735
2002	6.948172014747762
2003	7.627146124835592
2004	9.119132111355803
2005	11.249910195888479
2006	11.93965092882135
2007	11.22306166901957
2008	13.783994521536272
2009	8.04863602957372
2010	9.231458308088765
2011	11.793037539018165
2012	10.786123951430229
2013	9.679695050221026
2014	8.32859689611945
2015	4.5720391549156965
2016	4.002757837945142
2017	4.841055398943763
2018	6.312874384899724
2019	5.19226555901851
2020	3.750298963348168
2021	6.569297826717802