Fertility & birth rates in Japan and Slovenia

Fertility rate in Japan vs Slovenia 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 1.51 in Slovenia in 2023. The replacement level is considered to be 2.1 children per woman.

Check Japan vs Slovenia 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	Slovenia
1960	2	2.19
1961	1.96	2.27
1962	1.98	2.28
1963	2	2.27
1964	2.05	2.31
1965	2.14	2.43
1966	1.58	2.47
1967	2.23	2.37
1968	2.13	2.25
1969	2.13	2.17
1970	2.13	2.11
1971	2.16	2.16
1972	2.14	2.17
1973	2.14	2.2
1974	2.05	2.13
1975	1.91	2.17
1976	1.85	2.2
1977	1.8	2.17
1978	1.79	2.2
1979	1.77	2.22
1980	1.75	2.11
1981	1.74	1.96
1982	1.77	1.93
1983	1.8	1.81
1984	1.81	1.74
1985	1.76	1.71
1986	1.72	1.67
1987	1.69	1.65
1988	1.66	1.63
1989	1.57	1.52
1990	1.54	1.46
1991	1.53	1.42
1992	1.5	1.33
1993	1.46	1.33
1994	1.5	1.32
1995	1.42	1.29
1996	1.43	1.28
1997	1.39	1.25
1998	1.38	1.23
1999	1.34	1.21
2000	1.36	1.26
2001	1.33	1.21
2002	1.32	1.21
2003	1.29	1.2
2004	1.29	1.25
2005	1.26	1.26
2006	1.32	1.31
2007	1.34	1.38
2008	1.37	1.53
2009	1.37	1.53
2010	1.39	1.57
2011	1.39	1.56
2012	1.41	1.58
2013	1.43	1.55
2014	1.42	1.58
2015	1.45	1.57
2016	1.44	1.58
2017	1.43	1.62
2018	1.42	1.6
2019	1.36	1.61
2020	1.33	1.59
2021	1.3	1.64
2022	1.26	1.55
2023	1.2	1.51
2024	1.21	1.51
2025	1.22	1.51
2026	1.22	1.51
2027	1.23	1.51
2028	1.24	1.52
2029	1.25	1.52
2030	1.25	1.52
2031	1.26	1.52
2032	1.26	1.52
2033	1.27	1.52
2034	1.28	1.52
2035	1.28	1.52
2036	1.29	1.53
2037	1.29	1.53
2038	1.3	1.53
2039	1.3	1.53
2040	1.3	1.53
2041	1.31	1.53
2042	1.31	1.53
2043	1.31	1.53
2044	1.32	1.53
2045	1.32	1.53
2046	1.33	1.53
2047	1.33	1.53
2048	1.33	1.54
2049	1.34	1.54
2050	1.34	1.54

Children 0-14 years as share of population

Table

Year	Share of people 0-14 years old
	Japan	Slovenia
1960	29.8%	27.2%
1961	29.1%	27.2%
1962	28%	27.1%
1963	26.8%	26.9%
1964	25.8%	26.6%
1965	25.1%	26.2%
1966	24.4%	25.8%
1967	23.8%	25.5%
1968	23.5%	25.1%
1969	23.4%	24.7%
1970	23.3%	24.3%
1971	23.3%	24%
1972	23.4%	23.9%
1973	23.6%	23.8%
1974	23.8%	23.7%
1975	23.8%	23.6%
1976	23.9%	23.4%
1977	23.9%	23.3%
1978	23.8%	23.2%
1979	23.7%	23.1%
1980	23.4%	23%
1981	23.3%	22.9%
1982	23.1%	22.8%
1983	22.6%	22.7%
1984	22.2%	22.5%
1985	21.7%	22.3%
1986	21%	22%
1987	20.3%	21.6%
1988	19.5%	21.4%
1989	18.8%	21.1%
1990	18%	20.8%
1991	17.4%	20.3%
1992	16.9%	19.8%
1993	16.4%	19.3%
1994	16%	18.8%
1995	15.6%	18.3%
1996	15.3%	17.8%
1997	15.1%	17.3%
1998	14.8%	16.8%
1999	14.6%	16.4%
2000	14.4%	15.9%
2001	14.2%	15.6%
2002	14.1%	15.2%
2003	13.9%	14.8%
2004	13.8%	14.5%
2005	13.8%	14.3%
2006	13.7%	14.1%
2007	13.6%	14%
2008	13.5%	14%
2009	13.5%	14%
2010	13.4%	14.1%
2011	13.3%	14.3%
2012	13.2%	14.4%
2013	13.1%	14.6%
2014	13%	14.7%
2015	12.8%	14.8%
2016	12.7%	14.9%
2017	12.6%	15%
2018	12.5%	15.1%
2019	12.4%	15.1%
2020	12.2%	15.1%
2021	12%	15.2%
2022	11.9%	15.1%
2023	11.6%	14.9%
2024	11.4%	14.7%
2025	11.2%	14.5%
2026	11%	14.2%
2027	10.9%	14%
2028	10.7%	13.8%
2029	10.5%	13.5%
2030	10.4%	13.3%
2031	10.3%	13.1%
2032	10.2%	13%
2033	10.1%	12.8%
2034	10.1%	12.7%
2035	10.1%	12.6%
2036	10.1%	12.5%
2037	10.1%	12.4%
2038	10.2%	12.4%
2039	10.3%	12.5%
2040	10.4%	12.5%
2041	10.5%	12.6%
2042	10.6%	12.7%
2043	10.7%	12.8%
2044	10.8%	12.9%
2045	10.9%	13%
2046	11%	13.2%
2047	11.1%	13.3%
2048	11.2%	13.4%
2049	11.2%	13.5%
2050	11.2%	13.5%

Children aged 0-14 make up 11.4% of the population in Japan and 14.7% in Slovenia in 2024, compared to 18% and 20.8% respectively in 1990.

Demographics of Japan and Slovenia compared.

Natural population change in Japan vs Slovenia by year

For the past 10 years, the annual natural population change (excluding migration) has been -0.41% in Japan and -0.08% in Slovenia. 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	Slovenia
1960	894,874	12,678
1961	893,522	14,985
1962	901,864	13,150
1963	987,770	14,068
1964	1,046,553	12,567
1965	1,126,448	14,513
1966	682,072	15,697
1967	1,258,475	13,516
1968	1,191,930	11,250
1969	1,195,962	9,427
1970	1,230,496	10,004
1971	1,331,782	10,951
1972	1,372,006	10,513
1973	1,391,449	11,837
1974	1,332,960	11,367
1975	1,204,989	11,658
1976	1,127,750	12,196
1977	1,070,397	12,160
1978	1,011,234	11,920
1979	950,298	12,614
1980	864,372	11,027
1981	811,861	10,485
1982	805,664	9,170
1983	775,495	6,343
1984	756,523	5,990
1985	676,687	6,213
1986	631,706	6,094
1987	598,138	5,771
1988	527,085	5,986
1989	467,662	4,592
1990	407,478	3,797
1991	396,685	2,199
1992	360,833	598
1993	312,073	-199
1994	363,017	199
1995	276,039	0
1996	314,392	0
1997	277,325	-794
1998	265,440	-1,189
1999	202,610	-1,388
2000	228,317	-398
2001	203,438	-996
2002	178,423	-1,197
2003	114,946	-1,996
2004	76,656	-599
2005	-25,554	-600
2006	12,785	602
2007	-25,600	1,211
2008	-51,225	3,437
2009	-76,828	3,060
2010	-128,070	3,687
2011	-204,533	3,285
2012	-229,733	2,674
2013	-242,146	1,648
2014	-267,279	2,268
2015	-292,424	826
2016	-343,106	826
2017	-406,310	-207
2018	-456,520	-1,037
2019	-531,858	-1,254
2020	-542,923	-5,256
2021	-640,976	-4,216
2022	-825,825	-4,858
2023	-871,617	-4,665

Maternal mortality chart: Japan vs Slovenia

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 3 deaths in Slovenia.

Table

Year	Maternal mortality per 100K births
	Japan	Slovenia
1985	19	17
1986	18	16
1987	17	16
1988	16	16
1989	15	15
1990	14	14
1991	13	13
1992	13	13
1993	12	12
1994	11	12
1995	11	11
1996	11	10
1997	10	9
1998	10	9
1999	9	8
2000	9	7
2001	8	6
2002	8	6
2003	8	6
2004	7	6
2005	7	6
2006	7	6
2007	6	6
2008	6	7
2009	6	7
2010	6	7
2011	6	6
2012	6	6
2013	5	6
2014	5	6
2015	5	5
2016	5	5
2017	5	5
2018	5	4
2019	5	4
2020	4	12
2021	4	8
2022	5	15
2023	3	3

Under-five mortality rates

The chance that a newborn baby will die before reaching age five is 0.24% in Japan and 0.22% in Slovenia. 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	Slovenia
1960	3.97%	-
1961	3.62%	-
1962	3.29%	-
1963	2.98%	-
1964	2.7%	-
1965	2.46%	-
1966	2.26%	-
1967	2.1%	-
1968	1.96%	-
1969	1.85%	-
1970	1.75%	-
1971	1.65%	-
1972	1.57%	-
1973	1.49%	-
1974	1.41%	-
1975	1.33%	-
1976	1.25%	-
1977	1.18%	-
1978	1.11%	-
1979	1.05%	-
1980	0.99%	-
1981	0.93%	1.78%
1982	0.88%	1.69%
1983	0.83%	1.61%
1984	0.79%	1.53%
1985	0.75%	1.44%
1986	0.71%	1.36%
1987	0.68%	1.27%
1988	0.66%	1.19%
1989	0.64%	1.11%
1990	0.63%	1.04%
1991	0.62%	0.97%
1992	0.61%	0.9%
1993	0.6%	0.84%
1994	0.59%	0.79%
1995	0.57%	0.73%
1996	0.55%	0.69%
1997	0.52%	0.65%
1998	0.5%	0.61%
1999	0.47%	0.58%
2000	0.45%	0.54%
2001	0.43%	0.52%
2002	0.41%	0.49%
2003	0.4%	0.47%
2004	0.39%	0.44%
2005	0.37%	0.42%
2006	0.36%	0.4%
2007	0.35%	0.38%
2008	0.34%	0.36%
2009	0.34%	0.34%
2010	0.33%	0.32%
2011	0.33%	0.31%
2012	0.31%	0.29%
2013	0.3%	0.28%
2014	0.29%	0.27%
2015	0.28%	0.26%
2016	0.27%	0.26%
2017	0.26%	0.25%
2018	0.25%	0.24%
2019	0.25%	0.24%
2020	0.24%	0.24%
2021	0.24%	0.23%
2022	0.24%	0.23%
2023	0.24%	0.22%