Fertility & birth rates in Japan and Sierra Leone

Fertility rate in Japan vs Sierra Leone by year

Chart Table

Japan

Sierra Leone

1x

Year	Fertility rate
	Japan	Sierra Leone
2023	1.2	3.79
2022	1.26	3.88
2021	1.3	3.98
2020	1.33	4.08
2019	1.36	4.19
2018	1.42	4.29
2017	1.43	4.39
2016	1.44	4.47
2015	1.45	4.55
2014	1.42	4.7
2013	1.43	4.87
2012	1.41	5.06
2011	1.39	5.21
2010	1.39	5.33
2009	1.37	5.45
2008	1.37	5.56
2007	1.34	5.64
2006	1.32	5.74
2005	1.26	5.81
2004	1.29	5.92
2003	1.29	6.09
2002	1.32	6.23
2001	1.33	6.31
2000	1.36	6.36
1999	1.34	6.42
1998	1.38	6.5
1997	1.39	6.53
1996	1.43	6.55
1995	1.42	6.56
1994	1.5	6.56
1993	1.46	6.57
1992	1.5	6.56
1991	1.53	6.55
1990	1.54	6.57
1989	1.57	6.57
1988	1.66	6.59
1987	1.69	6.61
1986	1.72	6.6
1985	1.76	6.59
1984	1.81	6.59
1983	1.8	6.57
1982	1.77	6.56
1981	1.74	6.55
1980	1.75	6.56
1979	1.77	6.58
1978	1.79	6.59
1977	1.8	6.57
1976	1.85	6.55
1975	1.91	6.55
1974	2.05	6.53
1973	2.14	6.47
1972	2.14	6.45
1971	2.16	6.43
1970	2.13	6.41
1969	2.13	6.39
1968	2.13	6.39
1967	2.23	6.38
1966	1.58	6.35
1965	2.14	6.31
1964	2.05	6.29
1963	2	6.26
1962	1.98	6.22
1961	1.96	6.21
1960	2	6.18

According to the latest available data on birth rates, the fertility rate in Japan was 1.2 children per woman in 2023, compared to 3.79 in Sierra Leone in 2023. The replacement level is considered to be 2.1 children per woman.

Check Japan vs Sierra Leone population clock for a dynamic visualization of the changing population.

Natural population change by year

Chart Table

Japan

Sierra Leone

1x

Year	Natural population change
	Japan	Sierra Leone
2023	-871,617	188,788
2022	-825,825	186,625
2021	-640,976	183,326
2020	-542,923	181,015
2019	-531,858	181,068
2018	-456,520	178,772
2017	-406,310	173,259
2016	-343,106	168,784
2015	-292,424	162,275
2014	-267,279	160,137
2013	-242,146	161,265
2012	-229,733	160,915
2011	-204,533	158,858
2010	-128,070	155,338
2009	-76,828	152,669
2008	-51,225	149,855
2007	-25,600	145,740
2006	12,785	144,127
2005	-25,554	137,234
2004	76,656	132,661
2003	114,946	130,312
2002	178,423	126,429
2001	203,438	116,647
2000	228,317	110,754
1999	202,610	102,295
1998	265,440	103,906
1997	277,325	105,433
1996	314,392	104,140
1995	276,039	100,885
1994	363,017	101,486
1993	312,073	103,317
1992	360,833	103,251
1991	396,685	105,477
1990	407,478	100,778
1989	467,662	98,298
1988	527,085	96,344
1987	598,138	94,235
1986	631,706	90,902
1985	676,687	88,869
1984	756,523	87,072
1983	775,495	84,628
1982	805,664	82,457
1981	811,861	80,111
1980	864,372	77,932
1979	950,298	75,992
1978	1,011,234	74,130
1977	1,070,397	71,663
1976	1,127,750	69,506
1975	1,204,989	67,560
1974	1,332,960	65,357
1973	1,391,449	62,443
1972	1,372,006	60,279
1971	1,331,782	58,484
1970	1,230,496	56,513
1969	1,195,962	54,768
1968	1,191,930	53,126
1967	1,258,475	51,734
1966	682,072	49,486
1965	1,126,448	47,223
1964	1,046,553	45,487
1963	987,770	43,569
1962	901,864	41,603
1961	893,522	40,022
1960	894,874	38,192

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 -0.7% in Japan and +2.23% in Sierra Leone.

For the past 10 years, the annual natural population change has been -0.41% in Japan and +2.31% in Sierra Leone.

Birth rate in Japan vs Sierra Leone by year

Chart Table

Japan

Sierra Leone

Annual births per 1,000 people

1x

Year	Annual births per 1,000 people
	Japan	Sierra Leone
2023	6	30.6
2022	6.3	31.1
2021	6.6	31.6
2020	6.8	32.2
2019	7	32.8
2018	7.4	33.3
2017	7.6	33.8
2016	7.8	34.2
2015	8	34.7
2014	8	35.6
2013	8.2	36.6
2012	8.2	37.8
2011	8.3	38.5
2010	8.5	39.1
2009	8.5	39.9
2008	8.7	40.6
2007	8.6	41.1
2006	8.7	41.8
2005	8.4	42
2004	8.8	42.5
2003	8.9	43.5
2002	9.2	44.3
2001	9.3	44
2000	9.5	45
1999	9.4	46.1
1998	9.6	46.3
1997	9.5	46.3
1996	9.7	46.5
1995	9.6	46.8
1994	10	46.8
1993	9.6	46.9
1992	9.8	47
1991	9.9	47.5
1990	10	45.5
1989	10.2	46.3
1988	10.8	46.4
1987	11.1	46.6
1986	11.4	46.6
1985	11.9	46.7
1984	12.5	46.8
1983	12.7	46.7
1982	12.8	46.8
1981	13	46.8
1980	13.6	46.8
1979	14.2	47
1978	14.9	47.2
1977	15.5	47.1
1976	16.3	47.2
1975	17.1	47.3
1974	18.6	47.4
1973	19.4	47.2
1972	19.3	47.2
1971	19.2	47.3
1970	18.8	47.4
1969	18.5	47.5
1968	18.6	47.7
1967	19.4	47.9
1966	13.7	48
1965	18.6	48
1964	17.7	48.2
1963	17.3	48.2
1962	17	48.1
1961	16.9	48.1
1960	17.2	48

The latest reported birth rate per 1,000 people in 2023 was 6 in Japan and 30.6 in Sierra Leone, compared with 17.2 and 48, respectively, in 1960.

Children 0-14 years as share of population

Chart Table

Japan

Factual

UN forecast

Sierra Leone

Factual

UN forecast

1x

Year	Young
	Japan	Sierra Leone
2100	11.5%	19%
2099	11.5%	19%
2098	11.5%	19.1%
2097	11.5%	19.2%
2096	11.6%	19.3%
2095	11.6%	19.5%
2094	11.6%	19.6%
2093	11.7%	19.7%
2092	11.7%	19.8%
2091	11.8%	19.9%
2090	11.8%	20%
2089	11.8%	20.1%
2088	11.8%	20.3%
2087	11.9%	20.4%
2086	11.9%	20.5%
2085	11.8%	20.7%
2084	11.8%	20.8%
2083	11.8%	20.9%
2082	11.8%	21.1%
2081	11.7%	21.2%
2080	11.6%	21.4%
2079	11.6%	21.6%
2078	11.5%	21.7%
2077	11.4%	21.9%
2076	11.3%	22.1%
2075	11.2%	22.2%
2074	11.1%	22.4%
2073	11.1%	22.6%
2072	11%	22.8%
2071	10.9%	23%
2070	10.9%	23.2%
2069	10.8%	23.4%
2068	10.8%	23.6%
2067	10.8%	23.8%
2066	10.8%	24%
2065	10.8%	24.3%
2064	10.8%	24.5%
2063	10.8%	24.7%
2062	10.9%	25%
2061	10.9%	25.2%
2060	11%	25.5%
2059	11%	25.7%
2058	11.1%	26%
2057	11.1%	26.3%
2056	11.2%	26.6%
2055	11.2%	26.9%
2054	11.3%	27.1%
2053	11.3%	27.4%
2052	11.3%	27.7%
2051	11.3%	28.1%
2050	11.2%	28.4%
2049	11.2%	28.7%
2048	11.1%	29%
2047	11.1%	29.3%
2046	11%	29.7%
2045	10.9%	30%
2044	10.8%	30.3%
2043	10.7%	30.7%
2042	10.6%	31.1%
2041	10.5%	31.4%
2040	10.4%	31.8%
2039	10.3%	32.2%
2038	10.2%	32.6%
2037	10.1%	33%
2036	10.1%	33.4%
2035	10.1%	33.8%
2034	10.1%	34.2%
2033	10.1%	34.6%
2032	10.2%	35%
2031	10.3%	35.4%
2030	10.5%	35.7%
2029	10.6%	36.1%
2028	10.8%	36.5%
2027	11%	37%
2026	11.1%	37.4%
2025	11.3%	37.9%
2024	11.4%	38.1%
2023	11.6%	38.5%
2022	11.9%	39%
2021	12%	39.4%
2020	12.2%	39.8%
2019	12.4%	40.2%
2018	12.5%	40.6%
2017	12.6%	41%
2016	12.7%	41.4%
2015	12.8%	41.8%
2014	13%	42.2%
2013	13.1%	42.5%
2012	13.2%	42.8%
2011	13.3%	43%
2010	13.4%	43.2%
2009	13.5%	43.4%
2008	13.5%	43.5%
2007	13.6%	43.6%
2006	13.7%	43.7%
2005	13.8%	43.8%
2004	13.8%	43.9%
2003	13.9%	43.9%
2002	14.1%	43.9%
2001	14.2%	43.9%
2000	14.4%	43.8%
1999	14.6%	43.7%
1998	14.8%	43.6%
1997	15.1%	43.5%
1996	15.3%	43.5%
1995	15.6%	43.4%
1994	16%	43.3%
1993	16.4%	43.2%
1992	16.9%	43.1%
1991	17.4%	43%
1990	18%	42.9%
1989	18.8%	42.9%
1988	19.5%	42.8%
1987	20.3%	42.7%
1986	21%	42.6%
1985	21.7%	42.5%
1984	22.2%	42.3%
1983	22.6%	42.2%
1982	23.1%	42.1%
1981	23.3%	42%
1980	23.4%	41.9%
1979	23.7%	41.8%
1978	23.8%	41.7%
1977	23.9%	41.6%
1976	23.9%	41.4%
1975	23.8%	41.3%
1974	23.8%	41.1%
1973	23.6%	40.9%
1972	23.4%	40.7%
1971	23.3%	40.6%
1970	23.3%	40.3%
1969	23.4%	40.1%
1968	23.5%	39.9%
1967	23.8%	39.6%
1966	24.4%	39.4%
1965	25.1%	39.1%
1964	25.8%	38.8%
1963	26.8%	38.5%
1962	28%	38.3%
1961	29.1%	38.3%
1960	29.8%	38.2%

Children aged 0-14 make up 11.4% of the population in Japan and 38.1% in Sierra Leone in 2024, compared to 18% and 42.9% respectively in 1990.

Demographics of Japan and Sierra Leone compared.

Maternal mortality chart: Japan vs Sierra Leone

Chart Table

Japan

Sierra Leone

1x

Year	Maternal mortality per 100K births
	Japan	Sierra Leone
2023	3	354
2022	5	370
2021	4	403
2020	4	422
2019	5	464
2018	5	491
2017	5	578
2016	5	633
2015	5	730
2014	5	821
2013	5	842
2012	6	915
2011	6	967
2010	6	1,018
2009	6	1,054
2008	6	1,093
2007	6	1,132
2006	7	1,168
2005	7	1,294
2004	7	1,366
2003	8	1,433
2002	8	1,492
2001	8	1,518
2000	9	1,603
1999	9	1,731
1998	10	1,753
1997	10	1,721
1996	11	1,726
1995	11	1,777
1994	11	1,755
1993	12	1,696
1992	13	1,681
1991	13	1,699
1990	14	1,572
1989	15	1,575
1988	16	1,549
1987	17	1,533
1986	18	1,530
1985	19	1,506

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 354 deaths in Sierra Leone.

Under-five mortality rates

Chart Table

Japan

Sierra Leone

Probability that a newborn baby will die before reaching age five

1x

Year	Under 5 mortality rate
	Japan	Sierra Leone
2023	0.24%	9.43%
2022	0.24%	9.77%
2021	0.24%	10.1%
2020	0.24%	10.5%
2019	0.25%	10.9%
2018	0.25%	11.3%
2017	0.26%	11.8%
2016	0.27%	12.3%
2015	0.28%	13.8%
2014	0.29%	13.7%
2013	0.3%	13.9%
2012	0.31%	14.5%
2011	0.33%	15.2%
2010	0.33%	15.9%
2009	0.34%	16.6%
2008	0.34%	17.3%
2007	0.35%	18.1%
2006	0.36%	18.8%
2005	0.37%	19.4%
2004	0.39%	20.1%
2003	0.4%	20.7%
2002	0.41%	21.3%
2001	0.43%	21.8%
2000	0.45%	22.4%
1999	0.47%	22.9%
1998	0.5%	23.4%
1997	0.52%	23.9%
1996	0.55%	24.3%
1995	0.57%	24.7%
1994	0.59%	25%
1993	0.6%	25.3%
1992	0.61%	25.5%
1991	0.62%	25.7%
1990	0.63%	25.9%
1989	0.64%	26.2%
1988	0.66%	26.4%
1987	0.68%	26.6%
1986	0.71%	26.9%
1985	0.75%	27.2%
1984	0.79%	27.5%
1983	0.83%	27.8%
1982	0.88%	28.1%
1981	0.93%	28.5%
1980	0.99%	28.9%
1979	1.05%	29.2%
1978	1.11%	29.6%
1977	1.18%	30%
1976	1.25%	30.5%
1975	1.33%	30.9%
1974	1.41%	31.4%
1973	1.49%	31.9%
1972	1.57%	32.3%
1971	1.65%	32.9%
1970	1.75%	33.4%
1969	1.85%	33.9%
1968	1.96%	34.5%
1967	2.1%	35%
1966	2.26%	35.6%
1965	2.46%	36.2%
1964	2.7%	36.8%
1963	2.98%	37.4%
1962	3.29%	38%
1961	3.62%	38.5%
1960	3.97%	39.1%

The chance that a newborn baby will die before reaching age five is 0.24% in Japan and 9.43% in Sierra Leone. Above is a chart with historical data on under-five mortality rates.