Annual % of GNI
1976 13.272797454689465
1977 15.490823183726082
1978 15.695083013998408
1979 14.265266397989539
1980 16.620473555790785
1981 17.633998575958767
1982 17.807320388063218
1983 19.150916577427495
1984 17.297674057362094
1985 14.838988802754221
1986 19.284215158042347
1987 20.833010572862587
1988 17.779412265504615
1989 17.622698423135343
1990 18.478872189645855
1991 21.925640761016474
1992 22.041912040587047
1993 16.61142148880754
1994 19.719926168614762
1995 17.63215046515285
1996 16.107393697219266
1997 16.622945028067274
1998 18.045890454043825
1999 17.196029509279434
2000 16.600129719656206
2001 17.4308404590596
2002 19.13108430472879
2003 18.945045411595686
2004 18.011997515818766
2005 15.759814032254663
2006 15.700537978737122
2007 14.351433953575366
2008 11.183258668283573
2009 13.652097789682719
2010 14.83796854879696
2011 15.326564274263067
2012 13.906142444976982
2013 14.452055051060377
2014 14.390971500820132
2015 15.176955736871845
2016 14.533840402195533
2017 13.090945551399406
2018 12.066810400667173
2019 11.577384981342476
2020 14.810706098488385
2021 13.992339375864425
2022 10.403077646482044
2023 13.179334924151487