Year	% of GNI
1970	1.801146920963559
1971	1.574387907308764
1972	1.7423222611487506
1973	2.4396985045630686
1974	2.086436289719684
1975	2.237467283269441
1976	2.2493226436248595
1977	3.5951440796725227
1978	3.183618699769117
1979	2.675588608294017
1980	2.8872780658885366
1981	2.8981576073790443
1982	4.1635919004243
1983	2.9024326282591972
1984	2.5044710732048907
1985	1.924934077375578
1986	2.7968823052583733
1987	2.618792263031647
1988	2.5342197886505486
1989	2.6563304547120716
1990	3.01084194826025
1991	2.947332097892811
1992	3.072332986333673
1993	2.630996918286727
1994	3.626235519524021
1995	4.910038630867293
1996	4.524410344682876
1997	4.0275509029793986
1998	3.94704127205426
1999	2.599819979100609
2000	2.1726590763963336
2001	2.1656420482108762
2002	2.4711104196575993
2003	3.437191638025511
2004	2.6100109827511813
2005	2.407940021299815
2006	2.153581906027286
2007	2.6743993756026962
2008	2.039110015273665
2009	2.0133225380851076
2010	1.645359615585972
2011	1.5697148115622155
2012	1.625397942804835
2013	1.6157799728466944
2014	1.6892656467267462
2015	1.7649531331929849
2016	1.87458074470014
2017	1.817502869094321
2018	1.1911579296832562
2019	1.1214325249297497
2020	1.259561809109167
2021	1.2332662701601262