Year	% of GNI
1977	7.09182774728396
1978	14.8801869674525
1979	16.8118742169032
1980	14.307861823068
1981	-3.3045181379894
1982	-7.73282959431778
1983	-13.7013412469943
1984	4.76708173556182
1985	6.7401097374401
1992	18.3568476346633
1993	21.7256470812505
1994	12.2341181141287
1995	21.4502678232507
1996	26.1154819243322
1997	19.5196027439427
1998	16.5416495234665
1999	14.081815471928
2000	10.2232063563793
2001	7.23681375982189
2002	7.22430174070052
2003	11.8636607459905
2004	20.103089870795
2005	17.9197650589296