Fertility & birth rates in Japan and Tanzania

Fertility rate in Japan vs Tanzania chart

According to the latest available data on birth rates, the fertility rate in Japan was 1.2 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 Japan vs Tanzania population clock for a dynamic visualization of the changing population.

The chart below showcases historical changes in the birth rates.

Table

Year	Fertility rate
	Japan	Tanzania
1960	2	6.54
1961	1.96	6.56
1962	1.98	6.61
1963	2	6.65
1964	2.05	6.68
1965	2.14	6.73
1966	1.58	6.8
1967	2.23	6.86
1968	2.13	6.9
1969	2.13	6.95
1970	2.13	7
1971	2.16	7.04
1972	2.14	7.05
1973	2.14	7.06
1974	2.05	7.12
1975	1.91	7.1
1976	1.85	7.09
1977	1.8	7.07
1978	1.79	7.06
1979	1.77	7.04
1980	1.75	6.99
1981	1.74	6.93
1982	1.77	6.87
1983	1.8	6.81
1984	1.81	6.72
1985	1.76	6.6
1986	1.72	6.49
1987	1.69	6.41
1988	1.66	6.38
1989	1.57	6.3
1990	1.54	6.2
1991	1.53	6.14
1992	1.5	6.08
1993	1.46	6
1994	1.5	5.89
1995	1.42	5.82
1996	1.43	5.83
1997	1.39	5.84
1998	1.38	5.81
1999	1.34	5.75
2000	1.36	5.67
2001	1.33	5.62
2002	1.32	5.57
2003	1.29	5.58
2004	1.29	5.6
2005	1.26	5.58
2006	1.32	5.51
2007	1.34	5.4
2008	1.37	5.32
2009	1.37	5.26
2010	1.39	5.23
2011	1.39	5.14
2012	1.41	5.14
2013	1.43	5.16
2014	1.42	5.12
2015	1.45	5.03
2016	1.44	5.01
2017	1.43	4.99
2018	1.42	4.93
2019	1.36	4.87
2020	1.33	4.8
2021	1.3	4.73
2022	1.26	4.67
2023	1.2	4.61
2024	1.21	4.54
2025	1.22	4.47
2026	1.22	4.41
2027	1.23	4.34
2028	1.24	4.28
2029	1.25	4.22
2030	1.25	4.16
2031	1.26	4.11
2032	1.26	4.04
2033	1.27	3.98
2034	1.28	3.94
2035	1.28	3.88
2036	1.29	3.83
2037	1.29	3.76
2038	1.3	3.72
2039	1.3	3.67
2040	1.3	3.63
2041	1.31	3.57
2042	1.31	3.54
2043	1.31	3.49
2044	1.32	3.46
2045	1.32	3.4
2046	1.33	3.39
2047	1.33	3.35
2048	1.33	3.31
2049	1.34	3.25
2050	1.34	3.23

Children 0-14 years as share of population

Table

Year	Share of people 0-14 years old
	Japan	Tanzania
1960	29.8%	44.9%
1961	29.1%	44.8%
1962	28%	44.8%
1963	26.8%	44.8%
1964	25.8%	45%
1965	25.1%	45.2%
1966	24.4%	45.4%
1967	23.8%	45.6%
1968	23.5%	45.8%
1969	23.4%	45.9%
1970	23.3%	46%
1971	23.3%	46.1%
1972	23.4%	46.1%
1973	23.6%	46.2%
1974	23.8%	46.3%
1975	23.8%	46.4%
1976	23.9%	46.5%
1977	23.9%	46.6%
1978	23.8%	46.7%
1979	23.7%	46.9%
1980	23.4%	47.2%
1981	23.3%	47.4%
1982	23.1%	47.5%
1983	22.6%	47.6%
1984	22.2%	47.5%
1985	21.7%	47.4%
1986	21%	47.2%
1987	20.3%	46.9%
1988	19.5%	46.7%
1989	18.8%	46.5%
1990	18%	46.3%
1991	17.4%	46.2%
1992	16.9%	46%
1993	16.4%	45.5%
1994	16%	44.9%
1995	15.6%	44.5%
1996	15.3%	44.7%
1997	15.1%	44.8%
1998	14.8%	44.7%
1999	14.6%	44.7%
2000	14.4%	44.6%
2001	14.2%	44.5%
2002	14.1%	44.6%
2003	13.9%	44.6%
2004	13.8%	44.7%
2005	13.8%	44.8%
2006	13.7%	44.9%
2007	13.6%	45%
2008	13.5%	45.1%
2009	13.5%	45.3%
2010	13.4%	45.3%
2011	13.3%	45.2%
2012	13.2%	45.1%
2013	13.1%	44.9%
2014	13%	44.8%
2015	12.8%	44.5%
2016	12.7%	44.2%
2017	12.6%	44%
2018	12.5%	43.8%
2019	12.4%	43.6%
2020	12.2%	43.4%
2021	12%	43.1%
2022	11.9%	42.9%
2023	11.6%	42.7%
2024	11.4%	42.5%
2025	11.2%	42.3%
2026	11%	42.1%
2027	10.9%	41.9%
2028	10.7%	41.7%
2029	10.5%	41.4%
2030	10.4%	41.1%
2031	10.3%	40.9%
2032	10.2%	40.5%
2033	10.1%	40.2%
2034	10.1%	39.8%
2035	10.1%	39.5%
2036	10.1%	39.1%
2037	10.1%	38.8%
2038	10.2%	38.4%
2039	10.3%	38.1%
2040	10.4%	37.8%
2041	10.5%	37.5%
2042	10.6%	37.1%
2043	10.7%	36.8%
2044	10.8%	36.5%
2045	10.9%	36.2%
2046	11%	35.9%
2047	11.1%	35.6%
2048	11.2%	35.4%
2049	11.2%	35.1%
2050	11.2%	34.8%

Children aged 0-14 make up 11.4% of the population in Japan and 42.5% in Tanzania in 2024, compared to 18% and 46.3% respectively in 1990.

Demographics of Japan and Tanzania compared.

Natural population change in Japan vs Tanzania by year

For the past 10 years, the annual natural population change (excluding migration) has been -0.41% in Japan and +3.05% in Tanzania. The chart below illustrates the comparison of the absolute yearly changes resulting from births and deaths.

Table

Year	Population change due to births and deaths
	Japan	Tanzania
1960	894,874	275,814
1961	893,522	286,839
1962	901,864	300,663
1963	987,770	314,644
1964	1,046,553	328,527
1965	1,126,448	343,456
1966	682,072	360,229
1967	1,258,475	374,763
1968	1,191,930	389,467
1969	1,195,962	408,322
1970	1,230,496	427,988
1971	1,331,782	449,014
1972	1,372,006	467,305
1973	1,391,449	488,429
1974	1,332,960	515,152
1975	1,204,989	533,906
1976	1,127,750	553,617
1977	1,070,397	574,938
1978	1,011,234	595,024
1979	950,298	613,388
1980	864,372	629,444
1981	811,861	645,496
1982	805,664	662,627
1983	775,495	679,720
1984	756,523	687,435
1985	676,687	697,867
1986	631,706	705,677
1987	598,138	718,580
1988	527,085	736,551
1989	467,662	743,854
1990	407,478	750,825
1991	396,685	762,011
1992	360,833	767,961
1993	312,073	778,044
1994	363,017	803,953
1995	276,039	838,980
1996	314,392	868,524
1997	277,325	882,544
1998	265,440	920,806
1999	202,610	948,659
2000	228,317	985,185
2001	203,438	1,026,242
2002	178,423	1,063,195
2003	114,946	1,118,435
2004	76,656	1,175,379
2005	-25,554	1,224,165
2006	12,785	1,257,927
2007	-25,600	1,278,285
2008	-51,225	1,303,728
2009	-76,828	1,332,015
2010	-128,070	1,363,477
2011	-204,533	1,384,886
2012	-229,733	1,439,325
2013	-242,146	1,509,008
2014	-267,279	1,565,630
2015	-292,424	1,592,882
2016	-343,106	1,659,502
2017	-406,310	1,726,909
2018	-456,520	1,777,852
2019	-531,858	1,816,669
2020	-542,923	1,861,377
2021	-640,976	1,880,137
2022	-825,825	1,927,960
2023	-871,617	1,960,623

Maternal mortality chart: Japan vs Tanzania

The maternal mortality rate, which is the probability of dying during childbirth or within 42 days of pregnancy termination, is 3 deaths per 100,000 live births in Japan, compared to 276 deaths in Tanzania.

Table

Year	Maternal mortality per 100K births
	Japan	Tanzania
1985	19	980
1986	18	971
1987	17	964
1988	16	949
1989	15	927
1990	14	900
1991	13	873
1992	13	864
1993	12	851
1994	11	816
1995	11	797
1996	11	775
1997	10	777
1998	10	739
1999	9	635
2000	9	568
2001	8	493
2002	8	454
2003	8	397
2004	7	365
2005	7	350
2006	7	366
2007	6	453
2008	6	511
2009	6	502
2010	6	486
2011	6	475
2012	6	448
2013	5	479
2014	5	454
2015	5	433
2016	5	396
2017	5	345
2018	5	319
2019	5	292
2020	4	160
2021	4	162
2022	5	152
2023	3	276

Under-five mortality rates

The chance that a newborn baby will die before reaching age five is 0.24% in Japan and 3.89% in Tanzania. Below is the historical data on under-five mortality rates.

Table

Year	Mortality rate before reaching 5 years of age, per 1,000 live births
	Japan	Tanzania
1960	3.97%	24.2%
1961	3.62%	24%
1962	3.29%	23.8%
1963	2.98%	23.6%
1964	2.7%	23.4%
1965	2.46%	23.1%
1966	2.26%	22.8%
1967	2.1%	22.5%
1968	1.96%	22.2%
1969	1.85%	21.9%
1970	1.75%	21.6%
1971	1.65%	21.2%
1972	1.57%	20.9%
1973	1.49%	20.5%
1974	1.41%	20.1%
1975	1.33%	19.6%
1976	1.25%	19.2%
1977	1.18%	18.8%
1978	1.11%	18.4%
1979	1.05%	18.1%
1980	0.99%	17.9%
1981	0.93%	17.8%
1982	0.88%	17.8%
1983	0.83%	17.8%
1984	0.79%	17.8%
1985	0.75%	17.7%
1986	0.71%	17.6%
1987	0.68%	17.4%
1988	0.66%	17.2%
1989	0.64%	16.9%
1990	0.63%	16.7%
1991	0.62%	16.5%
1992	0.61%	16.3%
1993	0.6%	16.1%
1994	0.59%	15.9%
1995	0.57%	15.6%
1996	0.55%	15.2%
1997	0.52%	14.8%
1998	0.5%	14.2%
1999	0.47%	13.6%
2000	0.45%	12.8%
2001	0.43%	12.1%
2002	0.41%	11.3%
2003	0.4%	10.5%
2004	0.39%	9.86%
2005	0.37%	9.24%
2006	0.36%	8.69%
2007	0.35%	8.16%
2008	0.34%	7.7%
2009	0.34%	7.24%
2010	0.33%	6.86%
2011	0.33%	6.5%
2012	0.31%	6.21%
2013	0.3%	5.95%
2014	0.29%	5.67%
2015	0.28%	5.48%
2016	0.27%	5.25%
2017	0.26%	5.02%
2018	0.25%	4.8%
2019	0.25%	4.6%
2020	0.24%	4.42%
2021	0.24%	4.22%
2022	0.24%	4.05%
2023	0.24%	3.89%