Annual % of GNI
1974 25.049174269668715
1975 20.956113823052007
1976 29.224099599718876
1977 28.367241845940736
1978 28.886862298914355
1979 34.90778735069347
1980 30.412531622126505
1981 26.15733247002967
1982 25.08122591595975
1983 28.12684566808212
1984 30.72308645227041
1985 27.588171538334663
1986 27.452183572537564
1987 33.08104695443426
1988 33.49907193650996
1989 32.50377534068164
1990 31.732110123928887
1991 30.82974249917086
1992 33.47506413614494
1993 36.46356937191938
1994 36.86664958178868
1995 35.551682770267114
1996 38.84750962070693
1997 39.11602389243798
1998 42.12775812937443
1999 41.16457885221417
2000 39.087947186496166
2001 34.77929752015561
2002 35.025659496526615
2003 36.83501080175251
2004 37.0443860281199
2005 38.51209877055718
2006 39.95429644491919
2007 39.59919097964701
2008 39.70554984983211
2009 34.04222601204504
2010 34.56606465787159
2011 34.90883326589485
2012 32.09992946535033
2013 30.434972633194768
2014 30.37189696328044
2015 29.195730366291794
2016 29.19308335327827
2017 29.157356807673477
2018 26.9680915321364
2019 25.20420296119433
2020 24.30983540522177
2021 26.717652195634454
2022 27.50092555517906