Year	% of GDP
1970	0.007025577432223243
1971	0.031485503574059104
1972	0.038879682722900134
1973	0.041534727955895086
1974	0.10729737488241792
1975	0.2067437935778036
1976	0.239383149856341
1977	0.23711180366425877
1978	0.3245047503748288
1979	0.3228015244427523
1980	0.36276347360148065
1981	0.19531069804393908
1982	0.06918826464265981
1983	0.21186603410994295
1984	0.24456938161573685
1985	0.2677652234302437
1986	0.35693316868824937
1987	0.3605962049475006
1988	0.5715865774941604
1989	0.47620762040916587
1990	0.6673044141861487
1991	0.5075366087821871
1992	0.3400285526490294
1993	0.5659945365880203
1994	0.4903191378658406
1995	0.61807239745419
1996	0.5666820321888791
1997	0.5847279956010372
1998	0.2327089219480142
1999	0.2722998054120779
2000	0.6610275652643987
2001	1.0165430092301897
2002	0.7836291000296244
2003	0.7934115710948312
2004	0.6820546091042158
2005	0.5938187957542969
2006	0.8093695705751742
2007	0.6751815988522626
2008	0.8743919835255041
2009	0.668307132290954
2010	0.5724554270652411
2011	0.7138263458573877
2012	0.6894177536829347
2013	0.651227732186657
2014	0.532810090086437
2015	0.4648732544501359
2016	0.31640305031095267
2017	0.36139782765596745
2018	0.5426594964691476
2019	0.46807136544923955
2020	0.3375727111000815
2021	0.806011677401016