Year	% of GNI
1990	-12.5229894687926
1991	-23.2581631697321
1992	-23.9520892542784
1993	-19.1659509933648
1994	-21.6542741261577
1995	-26.9938979118236
1996	-27.6259430896406
1997	-16.808166142216
2001	-18.4723757239546
2002	-14.6125046480125
2003	-19.487984864707
2004	-14.0759529741321
2005	-18.6018871864979
2006	-17.3454369504803
2007	-15.9727937200414
2008	-14.9149943210814
2009	-20.9974810136102
2010	-26.2282612888144
2011	-9.94594388152494
2012	-22.834028180724
2013	-24.555667657737
2014	-14.1461049074435
2015	-16.4660001078341
2016	-17.1232156452077
2017	-13.5961987697751
2018	-2.79564796033777
2019	-4.47684691769408
2020	-3.69318087072925