Year	% of GNI
1980	34.2604501620949
1981	20.3537593693569
1982	26.2912910738093
1983	18.1469162813238
1984	19.4248839068141
1985	12.9839888897184
1986	24.1855166577344
1987	18.6110195818169
1988	22.2171534218654
1989	17.5815821518568
1990	18.9124452960738
1991	18.5257027445098
1992	21.0405293355068
1993	17.0752040055404
1994	20.2184057603131
1995	28.0522103736093
1996	25.9561800720525
1997	24.1986624112772
1998	33.9161459035676
1999	20.5800017458414
2000	12.2677777841972
2001	11.4925440541487
2002	12.8479117975575
2003	18.2483799640978
2004	14.4101307333377
2005	13.662537419765
2006	13.4910789498243
2007	16.8082584395785
2008	16.2351520195075
2009	17.4123357389349
2010	14.9949448606002
2011	13.171606743512
2012	17.0271670295121
2013	17.2706880552263
2014	18.0587999349341
2015	19.398012455808
2016	18.2414177785715
2017	15.9531753228436
2018	10.236730499765
2019	9.74182343048503
2020	10.9639967213306
2021	10.4138191581412