Fertility & birth rates in Brunei and Tanzania

Fertility rate in Brunei vs Tanzania by year

Chart Table

Brunei

Tanzania

1x

Year	Fertility rate
	Brunei	Tanzania
2023	1.75	4.61
2022	1.76	4.67
2021	1.78	4.73
2020	1.8	4.8
2019	1.82	4.87
2018	1.85	4.93
2017	1.88	4.99
2016	1.92	5.01
2015	1.95	5.03
2014	1.97	5.12
2013	1.98	5.16
2012	1.97	5.14
2011	1.96	5.14
2010	1.94	5.23
2009	1.92	5.26
2008	1.92	5.32
2007	1.93	5.4
2006	1.97	5.51
2005	2.02	5.58
2004	2.1	5.6
2003	2.19	5.58
2002	2.26	5.57
2001	2.34	5.62
2000	2.4	5.67
1999	2.46	5.75
1998	2.53	5.81
1997	2.6	5.84
1996	2.68	5.83
1995	2.79	5.82
1994	2.9	5.89
1993	3.01	6
1992	3.11	6.08
1991	3.21	6.14
1990	3.29	6.2
1989	3.36	6.3
1988	3.44	6.38
1987	3.49	6.41
1986	3.55	6.49
1985	3.61	6.6
1984	3.68	6.72
1983	3.75	6.81
1982	3.84	6.87
1981	3.94	6.93
1980	4.07	6.99
1979	4.22	7.04
1978	4.39	7.06
1977	4.58	7.07
1976	4.78	7.09
1975	4.99	7.1
1974	5.18	7.12
1973	5.36	7.06
1972	5.5	7.05
1971	5.62	7.04
1970	5.8	7
1969	6.01	6.95
1968	6.2	6.9
1967	6.37	6.86
1966	6.51	6.8
1965	6.65	6.73
1964	6.77	6.68
1963	6.89	6.65
1962	7.03	6.61
1961	7.19	6.56
1960	7.32	6.54

According to the latest available data on birth rates, the fertility rate in Brunei was 1.75 children per woman in 2023, compared to 4.61 in Tanzania in 2023. The replacement level is considered to be 2.1 children per woman.

Check Brunei vs Tanzania population clock for a dynamic visualization of the changing population.

Natural population change by year

Chart Table

Brunei

Tanzania

1x

Year	Natural population change
	Brunei	Tanzania
2023	3,837	1,960,623
2022	3,319	1,927,960
2021	3,985	1,880,137
2020	4,188	1,861,377
2019	4,335	1,816,669
2018	4,502	1,777,852
2017	4,685	1,726,909
2016	4,876	1,659,502
2015	5,060	1,592,882
2014	5,206	1,565,630
2013	5,302	1,509,008
2012	5,349	1,439,325
2011	5,242	1,384,886
2010	5,003	1,363,477
2009	4,789	1,332,015
2008	4,624	1,303,728
2007	4,521	1,278,285
2006	4,590	1,257,927
2005	4,703	1,224,165
2004	4,874	1,175,379
2003	5,034	1,118,435
2002	5,169	1,063,195
2001	5,275	1,026,242
2000	5,331	985,185
1999	5,388	948,659
1998	5,466	920,806
1997	5,518	882,544
1996	5,606	868,524
1995	5,750	838,980
1994	5,907	803,953
1993	6,045	778,044
1992	6,169	767,961
1991	6,259	762,011
1990	6,265	750,825
1989	6,202	743,854
1988	6,135	736,551
1987	6,017	718,580
1986	5,826	705,677
1985	5,620	697,867
1984	5,373	687,435
1983	5,138	679,720
1982	4,931	662,627
1981	4,839	645,496
1980	4,775	629,444
1979	4,717	613,388
1978	4,668	595,024
1977	4,594	574,938
1976	4,518	553,617
1975	4,431	533,906
1974	4,334	515,152
1973	4,216	488,429
1972	4,085	467,305
1971	3,880	449,014
1970	3,694	427,988
1969	3,618	408,322
1968	3,551	389,467
1967	3,477	374,763
1966	3,403	360,229
1965	3,326	343,456
1964	3,264	328,527
1963	3,195	314,644
1962	3,128	300,663
1961	3,175	286,839
1960	3,168	275,814

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 +0.84% in Brunei and +2.94% in Tanzania.

For the past 10 years, the annual natural population change has been +1.01% in Brunei and +3.05% in Tanzania.

Birth rate in Brunei vs Tanzania by year

Chart Table

Brunei

Tanzania

Annual births per 1,000 people

1x

Year	Annual births per 1,000 people
	Brunei	Tanzania
2023	13.6	35.2
2022	13.8	35.6
2021	14.1	36
2020	14.3	36.4
2019	14.6	36.9
2018	14.9	37.3
2017	15.3	37.6
2016	15.8	37.6
2015	16.2	37.6
2014	16.6	38.4
2013	16.9	38.4
2012	17.1	38.1
2011	17	38.1
2010	16.6	38.8
2009	16.2	39.2
2008	16	39.6
2007	15.9	40.2
2006	16.3	41
2005	16.7	41.5
2004	17.4	41.5
2003	18	41.3
2002	18.7	41.2
2001	19.3	41.4
2000	19.8	41.5
1999	20.4	41.8
1998	21	42.1
1997	21.6	42.1
1996	22.4	42.3
1995	23.4	41.9
1994	24.5	41.5
1993	25.6	41.7
1992	26.7	42.3
1991	27.7	42.7
1990	28.5	43
1989	29	43.5
1988	29.5	44
1987	29.8	44.3
1986	29.9	44.9
1985	29.9	45.7
1984	29.7	46.4
1983	29.4	47.1
1982	29.3	47.5
1981	29.7	47.9
1980	30.3	48.3
1979	30.9	48.8
1978	31.6	49.2
1977	32.2	49.5
1976	32.8	49.8
1975	33.4	50.2
1974	34	50.6
1973	34.5	50.3
1972	34.9	50.4
1971	34.6	50.6
1970	34.3	50.4
1969	34.7	50.3
1968	35.6	50.2
1967	36.5	50.3
1966	37.5	50.2
1965	38.6	49.9
1964	39.7	49.8
1963	41	49.7
1962	42.8	49.4
1961	45	49.1
1960	47.2	49

The latest reported birth rate per 1,000 people in 2023 was 13.6 in Brunei and 35.2 in Tanzania, compared with 47.2 and 49, respectively, in 1960.

Children 0-14 years as share of population

Chart Table

Brunei

Factual

UN forecast

Tanzania

Factual

UN forecast

1x

Year	Young
	Brunei	Tanzania
2100	13.8%	23.4%
2099	13.9%	23.6%
2098	13.9%	23.8%
2097	13.9%	23.9%
2096	14%	24.1%
2095	14%	24.3%
2094	14.1%	24.5%
2093	14.1%	24.7%
2092	14.1%	24.8%
2091	14.1%	25%
2090	14.2%	25.2%
2089	14.2%	25.4%
2088	14.2%	25.6%
2087	14.2%	25.8%
2086	14.2%	26%
2085	14.2%	26.2%
2084	14.2%	26.4%
2083	14.2%	26.6%
2082	14.2%	26.8%
2081	14.2%	27.1%
2080	14.2%	27.3%
2079	14.2%	27.5%
2078	14.2%	27.7%
2077	14.2%	28%
2076	14.2%	28.2%
2075	14.2%	28.4%
2074	14.3%	28.7%
2073	14.3%	28.9%
2072	14.3%	29.1%
2071	14.4%	29.4%
2070	14.4%	29.6%
2069	14.5%	29.8%
2068	14.6%	30.1%
2067	14.6%	30.3%
2066	14.7%	30.6%
2065	14.8%	30.8%
2064	14.8%	31.1%
2063	14.9%	31.3%
2062	15%	31.6%
2061	15%	31.9%
2060	15.1%	32.1%
2059	15.2%	32.4%
2058	15.2%	32.7%
2057	15.3%	32.9%
2056	15.3%	33.2%
2055	15.4%	33.5%
2054	15.4%	33.8%
2053	15.4%	34.1%
2052	15.5%	34.3%
2051	15.5%	34.6%
2050	15.6%	34.9%
2049	15.6%	35.2%
2048	15.7%	35.5%
2047	15.8%	35.8%
2046	15.9%	36.1%
2045	16%	36.4%
2044	16.1%	36.7%
2043	16.2%	37%
2042	16.3%	37.3%
2041	16.5%	37.6%
2040	16.7%	37.9%
2039	16.9%	38.3%
2038	17.1%	38.6%
2037	17.4%	39%
2036	17.6%	39.3%
2035	17.9%	39.6%
2034	18.1%	40%
2033	18.4%	40.3%
2032	18.7%	40.7%
2031	19%	41%
2030	19.3%	41.3%
2029	19.6%	41.6%
2028	20%	41.8%
2027	20.3%	42.1%
2026	20.5%	42.2%
2025	20.7%	42.4%
2024	20.8%	42.5%
2023	21%	42.7%
2022	21.2%	42.9%
2021	21.3%	43.1%
2020	21.6%	43.4%
2019	21.9%	43.6%
2018	22.3%	43.8%
2017	22.7%	44%
2016	23.1%	44.2%
2015	23.6%	44.5%
2014	24%	44.8%
2013	24.5%	44.9%
2012	24.9%	45.1%
2011	25.2%	45.2%
2010	25.3%	45.3%
2009	25.4%	45.3%
2008	25.5%	45.1%
2007	25.5%	45%
2006	25.9%	44.9%
2005	26.7%	44.8%
2004	27.4%	44.7%
2003	28.1%	44.6%
2002	28.9%	44.6%
2001	29.6%	44.5%
2000	30.3%	44.6%
1999	31%	44.7%
1998	31.6%	44.7%
1997	32.2%	44.8%
1996	32.7%	44.7%
1995	33.3%	44.5%
1994	33.7%	44.9%
1993	34.1%	45.5%
1992	34.3%	46%
1991	34.4%	46.2%
1990	34.4%	46.3%
1989	34.6%	46.5%
1988	34.7%	46.7%
1987	34.9%	46.9%
1986	35.2%	47.2%
1985	35.7%	47.4%
1984	36.3%	47.5%
1983	36.9%	47.6%
1982	37.6%	47.5%
1981	38.1%	47.4%
1980	38.5%	47.2%
1979	38.9%	46.9%
1978	39.3%	46.7%
1977	39.9%	46.6%
1976	40.6%	46.5%
1975	41.3%	46.4%
1974	42%	46.3%
1973	42.6%	46.2%
1972	43%	46.1%
1971	43.3%	46.1%
1970	43.6%	46%
1969	44.2%	45.9%
1968	44.8%	45.8%
1967	45.4%	45.6%
1966	46%	45.4%
1965	46.5%	45.2%
1964	46.6%	45%
1963	46.6%	44.8%
1962	46.1%	44.8%
1961	45.2%	44.8%
1960	44.1%	44.9%

Children aged 0-14 make up 20.8% of the population in Brunei and 42.5% in Tanzania in 2024, compared to 34.4% and 46.3% respectively in 1990.

Demographics of Brunei and Tanzania compared.

Maternal mortality chart: Brunei vs Tanzania

Chart Table

Brunei

Tanzania

1x

Year	Maternal mortality per 100K births
	Brunei	Tanzania
2023	36	276
2022	88	152
2021	44	162
2020	39	160
2019	38	292
2018	39	319
2017	39	345
2016	39	396
2015	39	433
2014	40	454
2013	40	479
2012	40	448
2011	40	475
2010	40	486
2009	40	502
2008	40	511
2007	41	453
2006	42	366
2005	43	350
2004	44	365
2003	45	397
2002	46	454
2001	46	493
2000	48	568
1999	50	635
1998	51	739
1997	52	777
1996	54	775
1995	55	797
1994	58	816
1993	59	851
1992	62	864
1991	65	873
1990	68	900
1989	71	927
1988	73	949
1987	75	964
1986	78	971
1985	79	980

The maternal mortality rate, which is the probability of dying during childbirth or within 42 days of pregnancy termination, is 36 deaths per 100,000 live births in Brunei, compared to 276 deaths in Tanzania.

Under-five mortality rates

Chart Table

Brunei

Tanzania

Probability that a newborn baby will die before reaching age five

1x

Year	Under 5 mortality rate
	Brunei	Tanzania
2023	0.94%	3.89%
2022	0.95%	4.05%
2021	0.96%	4.22%
2020	0.97%	4.42%
2019	0.98%	4.6%
2018	0.99%	4.8%
2017	1%	5.02%
2016	1%	5.25%
2015	1%	5.48%
2014	1%	5.67%
2013	0.99%	5.95%
2012	0.99%	6.21%
2011	0.98%	6.5%
2010	0.97%	6.86%
2009	0.96%	7.24%
2008	0.96%	7.7%
2007	0.95%	8.16%
2006	0.95%	8.69%
2005	0.95%	9.24%
2004	0.95%	9.86%
2003	0.96%	10.5%
2002	0.98%	11.3%
2001	1%	12.1%
2000	1.03%	12.8%
1999	1.07%	13.6%
1998	1.1%	14.2%
1997	1.15%	14.8%
1996	1.19%	15.2%
1995	1.23%	15.6%
1994	1.27%	15.9%
1993	1.3%	16.1%
1992	1.31%	16.3%
1991	1.32%	16.5%
1990	1.33%	16.7%
1989	1.35%	16.9%
1988	1.38%	17.2%
1987	1.42%	17.4%
1986	1.48%	17.6%
1985	1.57%	17.7%
1984	1.67%	17.8%
1983	1.79%	17.8%
1982	1.93%	17.8%
1981	2.09%	17.8%
1980	2.28%	17.9%
1979	2.48%	18.1%
1978	2.71%	18.4%
1977	2.95%	18.8%
1976	3.21%	19.2%
1975	3.49%	19.6%
1974	3.77%	20.1%
1973	4.06%	20.5%
1972	4.35%	20.9%
1971	4.64%	21.2%
1970	4.91%	21.6%
1969	5.16%	21.9%
1968	5.42%	22.2%
1967	5.69%	22.5%
1966	5.98%	22.8%
1965	6.32%	23.1%
1964	6.7%	23.4%
1963	7.15%	23.6%
1962	7.66%	23.8%
1961	8.24%	24%
1960	8.9%	24.2%

The chance that a newborn baby will die before reaching age five is 0.94% in Brunei and 3.89% in Tanzania. Above is a chart with historical data on under-five mortality rates.