Fertility & birth rates in Guinea-Bissau and Tonga

Fertility rate in Guinea-Bissau vs Tonga by year

Chart Table

Guinea-Bissau

Tonga

1x

Year	Fertility rate
	Guinea-Bissau	Tonga
2023	3.84	3.13
2022	3.91	3.17
2021	4	3.2
2020	4.08	3.23
2019	4.15	3.27
2018	4.24	3.33
2017	4.35	3.39
2016	4.52	3.46
2015	4.66	3.54
2014	4.79	3.62
2013	4.93	3.7
2012	5	3.77
2011	5.07	3.83
2010	5.11	3.88
2009	5.18	3.95
2008	5.27	4.01
2007	5.37	4.09
2006	5.41	4.14
2005	5.46	4.2
2004	5.5	4.19
2003	5.58	4.18
2002	5.63	4.14
2001	5.69	4.13
2000	5.79	4.16
1999	5.87	4.23
1998	5.97	4.31
1997	6.06	4.38
1996	6.14	4.46
1995	6.22	4.56
1994	6.3	4.66
1993	6.37	4.73
1992	6.44	4.79
1991	6.47	4.85
1990	6.5	4.93
1989	6.66	5.01
1988	6.69	5.1
1987	6.72	5.19
1986	6.73	5.27
1985	6.74	5.34
1984	6.73	5.41
1983	6.69	5.45
1982	6.64	5.5
1981	6.57	5.55
1980	6.49	5.6
1979	6.4	5.65
1978	6.32	5.68
1977	6.25	5.7
1976	6.19	5.73
1975	6.15	5.75
1974	6.12	5.77
1973	6.1	5.8
1972	6.08	5.86
1971	6.06	5.96
1970	6.04	6.07
1969	6.02	6.17
1968	6.01	6.23
1967	5.99	6.29
1966	5.98	6.35
1965	5.97	6.41
1964	5.96	6.46
1963	5.95	6.52
1962	5.94	6.57
1961	5.93	6.61
1960	5.92	6.65

According to the latest available data on birth rates, the fertility rate in Guinea-Bissau was 3.84 children per woman in 2023, compared to 3.13 in Tonga in 2023. The replacement level is considered to be 2.1 children per woman.

Check Guinea-Bissau vs Tonga population clock for a dynamic visualization of the changing population.

Natural population change by year

Chart Table

Guinea-Bissau

Tonga

1x

Year	Natural population change
	Guinea-Bissau	Tonga
2023	49,498	1,744
2022	48,920	1,772
2021	47,242	1,773
2020	46,718	1,816
2019	47,196	1,841
2018	46,659	1,873
2017	46,318	1,912
2016	46,814	1,989
2015	46,846	2,064
2014	46,615	2,135
2013	46,472	2,199
2012	45,480	2,255
2011	44,405	2,298
2010	43,067	2,332
2009	41,950	2,358
2008	40,841	2,397
2007	40,288	2,423
2006	38,886	2,459
2005	37,347	2,495
2004	36,495	2,478
2003	35,649	2,448
2002	34,561	2,396
2001	33,461	2,358
2000	32,816	2,346
1999	30,916	2,352
1998	30,390	2,344
1997	29,792	2,332
1996	29,778	2,393
1995	29,142	2,476
1994	27,895	2,547
1993	26,943	2,594
1992	25,747	2,622
1991	24,527	2,637
1990	23,936	2,641
1989	24,286	2,644
1988	23,940	2,649
1987	23,549	2,646
1986	23,301	2,704
1985	23,116	2,762
1984	22,861	2,814
1983	22,542	2,840
1982	22,131	2,853
1981	21,611	2,882
1980	21,024	2,885
1979	19,736	2,884
1978	17,468	2,862
1977	15,484	2,822
1976	13,688	2,769
1975	11,998	2,709
1974	10,321	2,650
1973	8,430	2,617
1972	7,911	2,605
1971	8,183	2,611
1970	7,632	2,628
1969	7,857	2,632
1968	7,289	2,614
1967	6,742	2,603
1966	6,955	2,550
1965	7,789	2,498
1964	8,989	2,445
1963	9,190	2,394
1962	10,662	2,343
1961	10,756	2,284
1960	10,618	2,230

The chart above illustrates the comparison of the absolute yearly changes in population resulting from births and deaths.

Excluding migration, the natural population change due to births and deaths from 2022 to 2023 was +2.3% in Guinea-Bissau and +1.67% in Tonga.

For the past 10 years, the annual natural population change has been +2.44% in Guinea-Bissau and +1.79% in Tonga.

Birth rate in Guinea-Bissau vs Tonga by year

Chart Table

Guinea-Bissau

Tonga

Annual births per 1,000 people

1x

Year	Annual births per 1,000 people
	Guinea-Bissau	Tonga
2023	30	23.1
2022	30.5	23.4
2021	31	23.5
2020	31.4	23.6
2019	31.8	23.8
2018	32.4	24.1
2017	33	24.5
2016	34.2	25.2
2015	35.2	25.8
2014	36.1	26.4
2013	37.1	26.9
2012	37.6	27.3
2011	38	27.7
2010	38.3	28
2009	38.7	28.4
2008	39.3	28.7
2007	40	29
2006	40.3	29.5
2005	40.6	30
2004	40.8	30
2003	41.3	29.9
2002	41.6	29.5
2001	41.8	29.4
2000	42.3	29.4
1999	42.7	29.6
1998	43.2	29.7
1997	43.6	29.8
1996	43.9	30.6
1995	44.3	31.4
1994	44.5	32.2
1993	44.6	32.7
1992	44.8	33
1991	44.9	33.2
1990	45.3	33.3
1989	46.5	33.4
1988	46.8	33.5
1987	47.2	33.7
1986	47.7	34.4
1985	48.1	34.9
1984	48.4	35.4
1983	48.7	35.6
1982	48.8	35.8
1981	48.8	36
1980	48.6	36.1
1979	47.8	36.1
1978	45.3	36
1977	44	35.7
1976	42.5	35.6
1975	40.8	35.8
1974	38.8	36
1973	39.1	36.5
1972	38.6	37
1971	39.5	37.8
1970	38.6	38.8
1969	39.6	39.6
1968	38.8	40.3
1967	38.6	41
1966	40	41.4
1965	41.9	41.9
1964	44	42.4
1963	44.1	42.9
1962	44.6	43.4
1961	45.2	43.9
1960	45.4	44.3

The latest reported birth rate per 1,000 people in 2023 was 30 in Guinea-Bissau and 23.1 in Tonga, compared with 45.4 and 44.3, respectively, in 1960.

Children 0-14 years as share of population

Chart Table

Guinea-Bissau

Factual

UN forecast

Tonga

Factual

UN forecast

1x

Year	Young
	Guinea-Bissau	Tonga
2100	19.7%	17.5%
2099	19.8%	17.6%
2098	19.9%	17.7%
2097	20%	17.7%
2096	20.2%	17.9%
2095	20.3%	18%
2094	20.4%	18.1%
2093	20.5%	18.3%
2092	20.6%	18.4%
2091	20.8%	18.6%
2090	20.9%	18.8%
2089	21%	19%
2088	21.2%	19.3%
2087	21.3%	19.5%
2086	21.5%	19.7%
2085	21.6%	20%
2084	21.8%	20.2%
2083	21.9%	20.4%
2082	22.1%	20.7%
2081	22.2%	20.9%
2080	22.4%	21.1%
2079	22.6%	21.3%
2078	22.7%	21.5%
2077	22.9%	21.7%
2076	23.1%	21.9%
2075	23.3%	22%
2074	23.4%	22.2%
2073	23.6%	22.3%
2072	23.8%	22.4%
2071	24%	22.6%
2070	24.2%	22.7%
2069	24.4%	22.8%
2068	24.6%	23%
2067	24.8%	23.2%
2066	25.1%	23.4%
2065	25.3%	23.6%
2064	25.5%	23.8%
2063	25.7%	24.1%
2062	26%	24.4%
2061	26.2%	24.7%
2060	26.5%	25%
2059	26.7%	25.4%
2058	27%	25.8%
2057	27.3%	26.2%
2056	27.5%	26.6%
2055	27.8%	27%
2054	28.1%	27.4%
2053	28.4%	27.8%
2052	28.7%	28.2%
2051	29%	28.5%
2050	29.3%	28.9%
2049	29.6%	29.1%
2048	29.9%	29.4%
2047	30.2%	29.6%
2046	30.5%	29.7%
2045	30.9%	29.8%
2044	31.2%	29.9%
2043	31.5%	30%
2042	31.9%	30.1%
2041	32.2%	30.1%
2040	32.5%	30.2%
2039	32.9%	30.2%
2038	33.2%	30.3%
2037	33.6%	30.4%
2036	33.9%	30.6%
2035	34.3%	30.7%
2034	34.6%	30.9%
2033	35%	31.1%
2032	35.3%	31.4%
2031	35.7%	31.8%
2030	36.2%	32.3%
2029	36.6%	33%
2028	37.1%	33.6%
2027	37.6%	34.1%
2026	38.1%	34.6%
2025	38.6%	35.2%
2024	38.8%	35.4%
2023	39.2%	35.6%
2022	39.7%	35.6%
2021	40.1%	35.7%
2020	40.5%	35.8%
2019	40.9%	36%
2018	41.3%	36.2%
2017	41.7%	36.4%
2016	42%	36.5%
2015	42.2%	36.7%
2014	42.5%	36.9%
2013	42.7%	37.1%
2012	42.8%	37.2%
2011	43%	37.4%
2010	43.2%	37.6%
2009	43.3%	37.8%
2008	43.5%	38%
2007	43.6%	38.3%
2006	43.8%	38.3%
2005	43.9%	38.3%
2004	44%	38.2%
2003	44.2%	38.1%
2002	44.3%	38.1%
2001	44.5%	38.2%
2000	44.7%	38.3%
1999	44.8%	38.6%
1998	45%	38.9%
1997	45.1%	39.3%
1996	45.2%	39.7%
1995	45.3%	39.9%
1994	45.4%	40.1%
1993	45.4%	40.3%
1992	45.5%	40.5%
1991	45.5%	40.6%
1990	45.7%	40.8%
1989	45.8%	40.9%
1988	45.9%	41.2%
1987	45.9%	41.5%
1986	46%	41.7%
1985	45.9%	42%
1984	45.9%	42.4%
1983	45.7%	42.9%
1982	45.5%	43.4%
1981	45.3%	43.9%
1980	45%	44.3%
1979	45.1%	44.8%
1978	44.8%	45.3%
1977	43.7%	45.8%
1976	42.6%	46.1%
1975	41.8%	46.2%
1974	41.4%	46.2%
1973	41.6%	46.2%
1972	41.9%	46.3%
1971	41.9%	46.4%
1970	41.9%	46.4%
1969	41.9%	46.3%
1968	41.8%	46.2%
1967	42.1%	46%
1966	41.9%	45.9%
1965	41%	45.9%
1964	39.6%	45.9%
1963	38.4%	45.9%
1962	37.7%	45.8%
1961	37.1%	45.7%
1960	36.9%	45.7%

Children aged 0-14 make up 38.8% of the population in Guinea-Bissau and 35.4% in Tonga in 2024, compared to 45.7% and 40.8% respectively in 1990.

Demographics of Guinea-Bissau and Tonga compared.

Maternal mortality chart: Guinea-Bissau vs Tonga

Chart Table

Guinea-Bissau

Tonga

1x

Year	Maternal mortality per 100K births
	Guinea-Bissau	Tonga
2023	505	67
2022	539	72
2021	617	76
2020	603	74
2019	598	73
2018	585	74
2017	597	77
2016	617	78
2015	631	79
2014	662	80
2013	707	80
2012	704	83
2011	678	84
2010	698	85
2009	753	91
2008	802	88
2007	792	88
2006	831	89
2005	956	92
2004	980	92
2003	1,069	95
2002	1,141	98
2001	1,222	98
2000	1,295	100
1999	1,461	99
1998	1,465	104
1997	1,642	111
1996	1,539	113
1995	1,556	117
1994	1,644	123
1993	1,613	127
1992	1,633	129
1991	1,663	134
1990	1,709	138
1989	1,698	139
1988	1,759	145
1987	1,796	147
1986	1,825	149
1985	1,851	148

The maternal mortality rate, which is the probability of dying during childbirth or within 42 days of pregnancy termination, is 505 deaths per 100,000 live births in Guinea-Bissau, compared to 67 deaths in Tonga.

Under-five mortality rates

Chart Table

Guinea-Bissau

Tonga

Probability that a newborn baby will die before reaching age five

1x

Year	Under 5 mortality rate
	Guinea-Bissau	Tonga
2023	6.93%	0.99%
2022	7.16%	1.02%
2021	7.41%	1.05%
2020	7.66%	1.08%
2019	7.91%	1.1%
2018	8.21%	1.12%
2017	8.53%	1.15%
2016	8.84%	1.17%
2015	9.18%	1.19%
2014	9.53%	1.22%
2013	9.93%	1.24%
2012	10.4%	1.26%
2011	10.9%	1.29%
2010	11.4%	1.31%
2009	12%	1.34%
2008	12.6%	1.37%
2007	13.2%	1.41%
2006	13.9%	1.44%
2005	14.5%	1.48%
2004	15.1%	1.52%
2003	15.7%	1.56%
2002	16.3%	1.61%
2001	16.8%	1.65%
2000	17.4%	1.7%
1999	17.9%	1.74%
1998	18.4%	1.78%
1997	18.9%	1.81%
1996	19.4%	1.85%
1995	19.9%	1.89%
1994	20.4%	1.94%
1993	20.9%	2%
1992	21.3%	2.06%
1991	21.8%	2.14%
1990	22.2%	2.21%
1989	22.7%	2.29%
1988	23.1%	2.37%
1987	23.5%	2.44%
1986	24%	2.51%
1985	24.4%	2.57%
1984	-	2.63%
1983	-	2.7%
1982	-	2.78%
1981	-	2.87%
1980	-	2.97%
1979	-	3.09%
1978	-	3.22%
1977	-	3.37%
1976	-	3.53%
1975	-	3.71%
1974	-	3.9%
1973	-	4.11%
1972	-	4.35%
1971	-	4.61%
1970	-	4.91%
1969	-	5.25%
1968	-	5.63%
1967	-	6.03%
1966	-	6.45%
1965	-	6.89%
1964	-	7.35%
1963	-	7.83%

The chance that a newborn baby will die before reaching age five is 6.93% in Guinea-Bissau and 0.99% in Tonga. Above is a chart with historical data on under-five mortality rates.