Year	% of GDP
1970	0.7027728893998981
1971	0.6969963371562765
1972	0.7449732014254603
1973	0.968769118678065
1974	2.9234501369232864
1975	2.7341241097416678
1976	2.8979771740406117
1977	2.8028097512386414
1978	2.3012972340752462
1979	4.134994138531306
1980	4.642868773205393
1981	3.811287865927181
1982	2.418030506573862
1983	2.4750903339894137
1984	2.3321833592143735
1985	2.0610524963672137
1986	0.9317679561892516
1987	1.0539385740849214
1988	1.082203783354164
1989	1.3511522577995847
1990	1.5926416396596594
1991	0.9917710171506768
1992	1.006755204946044
1993	0.9872093546311377
1994	0.8557854875721311
1995	0.9019529336370824
1996	1.1119816514631768
1997	1.0225267764187929
1998	0.6009371122589804
1999	0.8090792640561493
2000	1.52282777076226
2001	1.333165153644287
2002	1.1578720909032432
2003	1.3878776355176596
2004	1.658981960920349
2005	2.1361707188312513
2006	2.2560282370048994
2007	2.2365553842657206
2008	3.140428695077339
2009	1.7207660501785949
2010	2.2198109705201126
2011	3.0416293192932122
2012	2.748869477602194
2013	2.6097641241133376
2014	2.31698452540318
2015	1.248972663618202
2016	1.0906651520858102
2017	1.4206057156761838
2018	1.8889654508075273
2019	1.657108983933621
2020	1.096968994890758
2021	2.461376346111224