Year	% of GNI
1990	3.429972757278859
1991	3.247726818924611
1992	3.0303842646266417
1993	2.8936092859035685
1994	2.712618476782009
1995	2.533694897514311
1996	2.377844979424433
1997	2.297359472986707
1998	2.1770549696415786
1999	2.0381019624683407
2000	2.022127923035406
2001	1.9252280756352425
2002	1.844148216907052
2003	1.7495848274149257
2004	1.6377404684523555
2005	1.5411289323324262
2006	1.4543176223933412
2007	1.3956416648073557
2008	1.7253474141181615
2009	1.5852430786781573
2010	1.5146532527430931
2011	1.4551324330370103
2012	1.419325824239981
2013	1.3793037836295512
2014	1.3071485255259057
2015	1.2526720041131372
2016	1.1865505729827486
2017	1.1412395793656962
2018	1.1186931379482064
2019	1.1005734284922593
2020	1.1467124444653456
2021	1.0884916924247887