Year	% of GNI
1976	26.913691933116475
1977	26.1517896734779
1978	25.091505733399732
1979	25.31356266700485
1980	31.76713852053838
1981	32.93342247614157
1982	31.018894747833716
1983	30.421539328323295
1984	29.651586422303787
1985	26.75408998310773
1986	25.203550383753804
1987	25.00715781864721
1988	26.25718048707828
1989	24.61717959281557
1990	24.997336357442197
1991	19.904462344644504
1992	19.54213338433825
1993	20.968070258645557
1994	22.62012014811917
1995	21.778220608124737
1996	20.96715855412277
1997	20.368666516913844
1998	19.862651179559606
1999	17.253049883672922
2000	20.320935319380247
2001	22.43779148220736
2002	24.357408487053835
2003	23.87184965238464
2004	22.91508493964747
2005	25.427589392787326
2006	28.0214746090297
2007	27.549440934824812
2008	27.01410036255403
2009	22.50357360112021
2010	25.027739799024523
2011	27.521568737431192
2012	29.00286314295792
2013	28.156716494397333
2014	26.720839980923984
2015	24.843322306921205
2016	24.16314235443874
2017	25.997152245020338
2018	25.483189525728555
2019	24.897546294923174
2020	20.745194072815654
2021	22.922364858476655