Africa	Asia	Total
1974	857,527 (accounted)	11	13	24
1975	1,939,998 (accounted)	12	18	30
1976	2,608,860 (accounted)	17	25	42
1977	3,386,703 (accounted)	17	26	43
1978	4,274,209 (accounted)	19	31	50
1979	5,517,263 (accounted)	23	34	57
1980	6,640,032 (accounted)	24	40	64
1981	9,298,266 (accounted)	25	40	65
1982	8,871,891 (accounted)	27	39	66
1983	9,865,970 (accounted)	28	40	68
1984	10,327,917 (accounted)	28	41	69
1985	9,940,333 (accounted)	27	39	66
1986	11,876,728 (accounted)	30	38	68
1987	10,714,068 (accounted)	29	38	67
1988	11,700,657 (accounted)	28	39	67
1989	12,639,454 (accounted)	31	43	74
1990	13,247,108 (accounted)	36	43	79
1991	13,017,830 (accounted)	34	42	76
1992	15,871,099 (accounted)	34	41	75
1993	16,987,373 (accounted)	31	43	74
1994	16,441,623 (accounted)	27	41	68
1995	14,969,182 (accounted)	23	41	64
1996	14,707,831 (accounted)	21	39	60
1997	13,264,310 (accounted)	21	38	59
1998	12,005,795 (accounted)	23	37	60
1999	11,816,399 (accounted)	26	36	62
2000	13,402,585 (accounted)	26	41	67
2001	20,162,884 (accounted)	23	44	67
2002	26,025,340 (accounted)	23	42	65
2003	32,728,875 (accounted)	24	45	69
2004	34,865,024 (accounted)	23	46	69
2005	51,938,201 (accounted)	26	45	71
2006	45,113,366 (accounted)	27	46	73
2007	48,627,980 (accounted)	24	41	65
2008	52,854,148 (accounted)	22	41	63
2009	51,444,455 (accounted)	20	41	61
2010	52,372,045 (accounted)	20	36	56
2011	46,170,000 (accounted)	19	31	50
2012	47,730,000 (accounted)	21	30	51
2013	40,661,148 (accounted)	19	32	51
2014	37,488,000 (estimated)	19	29	48
2015	41,711,000 (estimated)	21	28	49
2016	44,261,000 (estimated)	19	27	46
2017	43,034,000 (estimated)	19	26	45
2018	41,398,000 (estimated)	14	27	41