Fertility & birth rates in Bulgaria and Congo

Fertility rate in Bulgaria vs Congo chart

According to the latest available data on birth rates, the fertility rate in Bulgaria was 1.81 children per woman in 2023, compared to 4.16 in the Congo in 2023. The replacement level is considered to be 2.1 children per woman.

Check Bulgaria vs the Congo population clock for a dynamic visualization of the changing population.

The chart below showcases historical changes in the birth rates.

Table

Year	Fertility rate
	Bulgaria	Congo
1960	2.31	6.09
1961	2.29	6.09
1962	2.24	6.1
1963	2.21	6.15
1964	2.19	6.18
1965	2.09	6.23
1966	2.03	6.27
1967	2.02	6.29
1968	2.27	6.33
1969	2.27	6.35
1970	2.17	6.38
1971	2.1	6.42
1972	2.03	6.44
1973	2.15	6.42
1974	2.29	6.39
1975	2.23	6.36
1976	2.24	6.32
1977	2.21	6.27
1978	2.15	6.21
1979	2.16	6.14
1980	2.05	6.07
1981	2	5.98
1982	2.01	5.85
1983	2.01	5.76
1984	2.01	5.66
1985	1.97	5.59
1986	2.02	5.51
1987	1.96	5.46
1988	1.97	5.39
1989	1.9	5.33
1990	1.82	5.27
1991	1.66	5.22
1992	1.55	5.18
1993	1.46	5.13
1994	1.37	5.1
1995	1.23	5.07
1996	1.23	5.03
1997	1.09	5
1998	1.11	4.91
1999	1.23	4.81
2000	1.26	4.72
2001	1.21	4.67
2002	1.23	4.7
2003	1.26	4.7
2004	1.33	4.69
2005	1.37	4.67
2006	1.44	4.65
2007	1.49	4.65
2008	1.56	4.73
2009	1.66	4.81
2010	1.57	4.85
2011	1.51	4.83
2012	1.5	4.79
2013	1.54	4.73
2014	1.62	4.67
2015	1.64	4.61
2016	1.67	4.55
2017	1.71	4.5
2018	1.73	4.44
2019	1.79	4.38
2020	1.77	4.33
2021	1.8	4.28
2022	1.78	4.22
2023	1.81	4.16
2024	1.81	4.11
2025	1.8	4.05
2026	1.8	3.99
2027	1.8	3.93
2028	1.8	3.88
2029	1.79	3.83
2030	1.79	3.78
2031	1.79	3.73
2032	1.79	3.68
2033	1.79	3.64
2034	1.79	3.59
2035	1.78	3.54
2036	1.78	3.5
2037	1.78	3.46
2038	1.77	3.42
2039	1.77	3.38
2040	1.77	3.35
2041	1.77	3.31
2042	1.77	3.27
2043	1.76	3.24
2044	1.76	3.2
2045	1.76	3.16
2046	1.76	3.13
2047	1.76	3.09
2048	1.76	3.06
2049	1.76	3.03
2050	1.76	3

Children 0-14 years as share of population

Table

Year	Share of people 0-14 years old
	Bulgaria	Congo
1960	26.1%	42.7%
1961	25.8%	43%
1962	25.4%	43.3%
1963	25.1%	43.5%
1964	24.7%	43.7%
1965	24.2%	43.9%
1966	23.8%	44%
1967	23.4%	44.2%
1968	23.2%	44.3%
1969	23%	44.5%
1970	22.8%	44.7%
1971	22.6%	44.8%
1972	22.4%	45%
1973	22.3%	45.2%
1974	22.2%	45.4%
1975	22.3%	45.5%
1976	22.3%	45.7%
1977	22.2%	45.8%
1978	22.2%	45.8%
1979	22.1%	45.8%
1980	22.1%	45.7%
1981	22.1%	45.6%
1982	22.1%	45.4%
1983	22%	45.2%
1984	21.8%	45%
1985	21.6%	44.9%
1986	21.4%	44.7%
1987	21.3%	44.6%
1988	21.1%	44.5%
1989	20.8%	44.3%
1990	20.3%	44.2%
1991	19.8%	44%
1992	19.3%	43.8%
1993	18.8%	43.6%
1994	18.3%	43.4%
1995	17.9%	43.3%
1996	17.4%	43.2%
1997	17%	43.3%
1998	16.5%	43.3%
1999	16.1%	43.1%
2000	15.7%	42.5%
2001	15.2%	41.9%
2002	14.8%	41.9%
2003	14.4%	41.7%
2004	14%	41.4%
2005	13.7%	41.1%
2006	13.5%	40.9%
2007	13.4%	40.7%
2008	13.3%	40.7%
2009	13.4%	40.5%
2010	13.5%	40.4%
2011	13.5%	40.6%
2012	13.6%	41%
2013	13.7%	41.3%
2014	13.8%	41.7%
2015	13.9%	41.9%
2016	14%	42.1%
2017	14.2%	42.1%
2018	14.3%	42.1%
2019	14.4%	41.9%
2020	14.4%	41.8%
2021	14.5%	41.5%
2022	14.5%	41.3%
2023	14.5%	40.9%
2024	14.5%	40.4%
2025	14.4%	39.9%
2026	14.3%	39.4%
2027	14.3%	38.9%
2028	14.2%	38.4%
2029	14.1%	38%
2030	14%	37.6%
2031	14%	37.3%
2032	13.9%	37%
2033	13.8%	36.8%
2034	13.8%	36.6%
2035	13.7%	36.4%
2036	13.7%	36.2%
2037	13.7%	36%
2038	13.6%	35.8%
2039	13.6%	35.6%
2040	13.6%	35.5%
2041	13.6%	35.3%
2042	13.6%	35.1%
2043	13.6%	34.9%
2044	13.6%	34.7%
2045	13.6%	34.4%
2046	13.7%	34.2%
2047	13.7%	33.9%
2048	13.7%	33.6%
2049	13.8%	33.4%
2050	13.8%	33.1%

Children aged 0-14 make up 14.5% of the population in Bulgaria and 40.4% in the Congo in 2024, compared to 20.3% and 44.2% respectively in 1990.

Demographics of Bulgaria and the Congo compared.

Natural population change in Bulgaria vs Congo by year

For the past 10 years, the annual natural population change (excluding migration) has been -0.79% in Bulgaria and +2.59% in the Congo. 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
	Bulgaria	Congo
1960	76,314	27,094
1961	75,460	28,220
1962	64,104	29,342
1963	66,241	30,832
1964	66,783	32,270
1965	58,249	33,865
1966	54,504	35,452
1967	49,861	36,866
1968	69,468	38,786
1969	63,256	40,532
1970	61,125	42,374
1971	52,925	44,431
1972	47,169	46,427
1973	57,760	48,017
1974	64,223	49,563
1975	54,941	51,155
1976	56,055	52,148
1977	47,543	53,179
1978	44,070	53,885
1979	40,599	54,723
1980	30,129	55,550
1981	29,341	56,603
1982	24,077	57,036
1983	21,455	58,120
1984	20,610	59,028
1985	11,649	60,359
1986	16,125	61,669
1987	8,971	63,183
1988	9,879	64,629
1989	5,326	65,944
1990	-3,487	67,241
1991	-14,675	68,534
1992	-18,789	69,973
1993	-24,569	71,119
1994	-32,086	72,857
1995	-42,030	74,189
1996	-45,159	75,628
1997	-58,185	66,149
1998	-52,844	72,450
1999	-39,411	76,204
2000	-41,668	78,491
2001	-44,050	84,876
2002	-46,240	88,497
2003	-44,319	91,326
2004	-40,128	96,577
2005	-42,124	101,344
2006	-39,526	106,876
2007	-37,727	112,459
2008	-32,967	120,711
2009	-26,800	126,904
2010	-34,759	136,908
2011	-37,477	140,371
2012	-40,183	142,464
2013	-37,948	142,080
2014	-41,027	141,674
2015	-44,699	141,539
2016	-42,744	141,358
2017	-45,583	141,973
2018	-46,304	142,704
2019	-46,317	139,513
2020	-65,507	143,492
2021	-90,452	144,241
2022	-62,065	147,076
2023	-43,837	150,486

Maternal mortality chart: Bulgaria vs Congo

The maternal mortality rate, which is the probability of dying during childbirth or within 42 days of pregnancy termination, is 6 deaths per 100,000 live births in Bulgaria, compared to 241 deaths in the Congo.

Table

Year	Maternal mortality per 100K births
	Bulgaria	Congo
1985	26	546
1986	25	535
1987	25	519
1988	26	510
1989	25	506
1990	27	505
1991	25	514
1992	25	531
1993	23	541
1994	25	551
1995	23	551
1996	22	545
1997	23	650
1998	20	597
1999	20	554
2000	19	509
2001	17	489
2002	15	464
2003	14	436
2004	14	400
2005	13	385
2006	12	394
2007	11	370
2008	10	395
2009	9	414
2010	9	382
2011	8	378
2012	7	374
2013	7	320
2014	7	302
2015	7	284
2016	7	263
2017	7	262
2018	7	259
2019	6	245
2020	9	247
2021	9	301
2022	10	241
2023	6	241

Under-five mortality rates

The chance that a newborn baby will die before reaching age five is 0.61% in Bulgaria and 4.05% in the Congo. 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
	Bulgaria	Congo
1960	5.47%	19.4%
1961	4.89%	18.6%
1962	4.43%	18%
1963	4.08%	17.3%
1964	3.86%	16.7%
1965	3.75%	16.1%
1966	3.7%	15.6%
1967	3.64%	15.1%
1968	3.54%	14.6%
1969	3.4%	14.2%
1970	3.25%	13.7%
1971	3.11%	13.4%
1972	3.01%	13%
1973	2.95%	12.6%
1974	2.91%	12.4%
1975	2.86%	12.1%
1976	2.8%	11.8%
1977	2.72%	11.5%
1978	2.6%	11.2%
1979	2.49%	11%
1980	2.38%	10.7%
1981	2.3%	10.5%
1982	2.22%	10.2%
1983	2.15%	9.95%
1984	2.07%	9.68%
1985	1.97%	9.44%
1986	1.87%	9.25%
1987	1.8%	9.11%
1988	1.78%	9.04%
1989	1.79%	9.05%
1990	1.83%	9.15%
1991	1.89%	9.31%
1992	1.92%	9.54%
1993	1.92%	9.84%
1994	1.91%	10.2%
1995	1.92%	10.5%
1996	1.94%	10.9%
1997	1.93%	11.2%
1998	1.89%	11.4%
1999	1.82%	11.5%
2000	1.75%	11.4%
2001	1.68%	11.1%
2002	1.6%	10.6%
2003	1.51%	10%
2004	1.42%	9.35%
2005	1.33%	8.66%
2006	1.24%	8.02%
2007	1.18%	7.43%
2008	1.14%	6.95%
2009	1.12%	6.55%
2010	1.08%	6.25%
2011	1.04%	6.02%
2012	0.99%	5.82%
2013	0.93%	5.64%
2014	0.87%	5.45%
2015	0.82%	5.27%
2016	0.77%	5.09%
2017	0.73%	4.93%
2018	0.7%	4.77%
2019	0.67%	5.24%
2020	0.65%	4.47%
2021	0.63%	4.33%
2022	0.62%	4.19%
2023	0.61%	4.05%