Fertility & birth rates in Bulgaria and Congo

Fertility rate in Bulgaria vs Congo by year

Chart Table

Bulgaria

Congo

1x

Year	Fertility rate
	Bulgaria	Congo
2023	1.81	4.16
2022	1.78	4.22
2021	1.8	4.28
2020	1.77	4.33
2019	1.79	4.38
2018	1.73	4.44
2017	1.71	4.5
2016	1.67	4.55
2015	1.64	4.61
2014	1.62	4.67
2013	1.54	4.73
2012	1.5	4.79
2011	1.51	4.83
2010	1.57	4.85
2009	1.66	4.81
2008	1.56	4.73
2007	1.49	4.65
2006	1.44	4.65
2005	1.37	4.67
2004	1.33	4.69
2003	1.26	4.7
2002	1.23	4.7
2001	1.21	4.67
2000	1.26	4.72
1999	1.23	4.81
1998	1.11	4.91
1997	1.09	5
1996	1.23	5.03
1995	1.23	5.07
1994	1.37	5.1
1993	1.46	5.13
1992	1.55	5.18
1991	1.66	5.22
1990	1.82	5.27
1989	1.9	5.33
1988	1.97	5.39
1987	1.96	5.46
1986	2.02	5.51
1985	1.97	5.59
1984	2.01	5.66
1983	2.01	5.76
1982	2.01	5.85
1981	2	5.98
1980	2.05	6.07
1979	2.16	6.14
1978	2.15	6.21
1977	2.21	6.27
1976	2.24	6.32
1975	2.23	6.36
1974	2.29	6.39
1973	2.15	6.42
1972	2.03	6.44
1971	2.1	6.42
1970	2.17	6.38
1969	2.27	6.35
1968	2.27	6.33
1967	2.02	6.29
1966	2.03	6.27
1965	2.09	6.23
1964	2.19	6.18
1963	2.21	6.15
1962	2.24	6.1
1961	2.29	6.09
1960	2.31	6.09

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.

Natural population change by year

Chart Table

Bulgaria

Congo

1x

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

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 -0.68% in Bulgaria and +2.43% in the Congo.

For the past 10 years, the annual natural population change has been -0.79% in Bulgaria and +2.59% in the Congo.

Birth rate in Bulgaria vs Congo by year

Chart Table

Bulgaria

Congo

Annual births per 1,000 people

1x

Year	Annual births per 1,000 people
	Bulgaria	Congo
2023	8.9	30.6
2022	8.8	30.9
2021	9	31.4
2020	9	31.7
2019	9.3	32.2
2018	9.3	32.8
2017	9.4	33.4
2016	9.4	34.1
2015	9.4	34.9
2014	9.6	35.8
2013	9.3	36.8
2012	9.5	37.8
2011	9.6	38.4
2010	10.2	38.9
2009	10.9	38
2008	10.4	38
2007	10	37.2
2006	9.7	37.1
2005	9.3	37
2004	9.1	37.1
2003	8.7	37
2002	8.5	37.3
2001	8.5	37.1
2000	9	36.2
1999	8.8	37
1998	7.9	37.5
1997	7.7	38.4
1996	8.6	38.4
1995	8.6	38.5
1994	9.4	38.6
1993	10	38.6
1992	10.4	38.7
1991	11.1	38.8
1990	12.1	38.9
1989	12.6	39.1
1988	13.1	39.2
1987	13	39.4
1986	13.4	39.6
1985	13.3	39.8
1984	13.6	40.1
1983	13.8	40.6
1982	13.9	40.8
1981	14	41.4
1980	14.5	41.8
1979	15.3	42.2
1978	15.5	42.7
1977	16.1	43.2
1976	16.5	43.6
1975	16.6	44
1974	17.2	44.1
1973	16.2	44.3
1972	15.3	44.5
1971	15.9	44.4
1970	16.3	44.1
1969	17	44
1968	16.9	43.9
1967	15	43.7
1966	14.9	43.6
1965	15.3	43.5
1964	16.1	43.4
1963	16.4	43.3
1962	16.7	43.2
1961	17.4	43.3
1960	17.8	43.5

The latest reported birth rate per 1,000 people in 2023 was 8.9 in Bulgaria and 30.6 in the Congo, compared with 17.8 and 43.5, respectively, in 1960.

Children 0-14 years as share of population

Chart Table

Bulgaria

Factual

UN forecast

Congo

Factual

UN forecast

1x

Year	Young
	Bulgaria	Congo
2100	13%	22.6%
2099	13.1%	22.7%
2098	13.1%	22.8%
2097	13.1%	23%
2096	13.2%	23.1%
2095	13.2%	23.3%
2094	13.3%	23.4%
2093	13.4%	23.6%
2092	13.4%	23.8%
2091	13.4%	23.9%
2090	13.5%	24.1%
2089	13.5%	24.3%
2088	13.6%	24.4%
2087	13.6%	24.6%
2086	13.6%	24.8%
2085	13.6%	25%
2084	13.6%	25.2%
2083	13.6%	25.4%
2082	13.6%	25.6%
2081	13.6%	25.9%
2080	13.6%	26.1%
2079	13.6%	26.3%
2078	13.6%	26.5%
2077	13.6%	26.7%
2076	13.6%	26.9%
2075	13.5%	27.1%
2074	13.5%	27.3%
2073	13.5%	27.5%
2072	13.5%	27.7%
2071	13.5%	27.9%
2070	13.5%	28.1%
2069	13.6%	28.3%
2068	13.6%	28.5%
2067	13.6%	28.7%
2066	13.6%	29%
2065	13.6%	29.2%
2064	13.7%	29.4%
2063	13.7%	29.6%
2062	13.7%	29.9%
2061	13.8%	30.1%
2060	13.8%	30.4%
2059	13.8%	30.7%
2058	13.9%	30.9%
2057	13.9%	31.2%
2056	13.9%	31.5%
2055	13.9%	31.8%
2054	13.9%	32.1%
2053	13.9%	32.4%
2052	13.9%	32.7%
2051	13.8%	32.9%
2050	13.8%	33.2%
2049	13.8%	33.5%
2048	13.7%	33.8%
2047	13.7%	34.1%
2046	13.6%	34.3%
2045	13.6%	34.6%
2044	13.6%	34.8%
2043	13.6%	35%
2042	13.6%	35.2%
2041	13.6%	35.4%
2040	13.6%	35.6%
2039	13.6%	35.7%
2038	13.7%	35.9%
2037	13.7%	36.1%
2036	13.7%	36.3%
2035	13.7%	36.5%
2034	13.8%	36.7%
2033	13.8%	36.9%
2032	13.9%	37.2%
2031	14%	37.5%
2030	14.1%	37.8%
2029	14.2%	38.2%
2028	14.2%	38.6%
2027	14.3%	39.1%
2026	14.4%	39.7%
2025	14.4%	40.2%
2024	14.5%	40.4%
2023	14.5%	40.9%
2022	14.5%	41.3%
2021	14.5%	41.5%
2020	14.4%	41.8%
2019	14.4%	41.9%
2018	14.3%	42.1%
2017	14.2%	42.1%
2016	14%	42.1%
2015	13.9%	41.9%
2014	13.8%	41.7%
2013	13.7%	41.3%
2012	13.6%	41%
2011	13.5%	40.6%
2010	13.5%	40.4%
2009	13.4%	40.5%
2008	13.3%	40.7%
2007	13.4%	40.7%
2006	13.5%	40.9%
2005	13.7%	41.1%
2004	14%	41.4%
2003	14.4%	41.7%
2002	14.8%	41.9%
2001	15.2%	41.9%
2000	15.7%	42.5%
1999	16.1%	43.1%
1998	16.5%	43.3%
1997	17%	43.3%
1996	17.4%	43.2%
1995	17.9%	43.3%
1994	18.3%	43.4%
1993	18.8%	43.6%
1992	19.3%	43.8%
1991	19.8%	44%
1990	20.3%	44.2%
1989	20.8%	44.3%
1988	21.1%	44.5%
1987	21.3%	44.6%
1986	21.4%	44.7%
1985	21.6%	44.9%
1984	21.8%	45%
1983	22%	45.2%
1982	22.1%	45.4%
1981	22.1%	45.6%
1980	22.1%	45.7%
1979	22.1%	45.8%
1978	22.2%	45.8%
1977	22.2%	45.8%
1976	22.3%	45.7%
1975	22.3%	45.5%
1974	22.2%	45.4%
1973	22.3%	45.2%
1972	22.4%	45%
1971	22.6%	44.8%
1970	22.8%	44.7%
1969	23%	44.5%
1968	23.2%	44.3%
1967	23.4%	44.2%
1966	23.8%	44%
1965	24.2%	43.9%
1964	24.7%	43.7%
1963	25.1%	43.5%
1962	25.4%	43.3%
1961	25.8%	43%
1960	26.1%	42.7%

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.

Maternal mortality chart: Bulgaria vs Congo

Chart Table

Bulgaria

Congo

1x

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

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.

Under-five mortality rates

Chart Table

Bulgaria

Congo

Probability that a newborn baby will die before reaching age five

1x

Year	Under 5 mortality rate
	Bulgaria	Congo
2023	0.61%	4.05%
2022	0.62%	4.19%
2021	0.63%	4.33%
2020	0.65%	4.47%
2019	0.67%	5.24%
2018	0.7%	4.77%
2017	0.73%	4.93%
2016	0.77%	5.09%
2015	0.82%	5.27%
2014	0.87%	5.45%
2013	0.93%	5.64%
2012	0.99%	5.82%
2011	1.04%	6.02%
2010	1.08%	6.25%
2009	1.12%	6.55%
2008	1.14%	6.95%
2007	1.18%	7.43%
2006	1.24%	8.02%
2005	1.33%	8.66%
2004	1.42%	9.35%
2003	1.51%	10%
2002	1.6%	10.6%
2001	1.68%	11.1%
2000	1.75%	11.4%
1999	1.82%	11.5%
1998	1.89%	11.4%
1997	1.93%	11.2%
1996	1.94%	10.9%
1995	1.92%	10.5%
1994	1.91%	10.2%
1993	1.92%	9.84%
1992	1.92%	9.54%
1991	1.89%	9.31%
1990	1.83%	9.15%
1989	1.79%	9.05%
1988	1.78%	9.04%
1987	1.8%	9.11%
1986	1.87%	9.25%
1985	1.97%	9.44%
1984	2.07%	9.68%
1983	2.15%	9.95%
1982	2.22%	10.2%
1981	2.3%	10.5%
1980	2.38%	10.7%
1979	2.49%	11%
1978	2.6%	11.2%
1977	2.72%	11.5%
1976	2.8%	11.8%
1975	2.86%	12.1%
1974	2.91%	12.4%
1973	2.95%	12.6%
1972	3.01%	13%
1971	3.11%	13.4%
1970	3.25%	13.7%
1969	3.4%	14.2%
1968	3.54%	14.6%
1967	3.64%	15.1%
1966	3.7%	15.6%
1965	3.75%	16.1%
1964	3.86%	16.7%
1963	4.08%	17.3%
1962	4.43%	18%
1961	4.89%	18.6%
1960	5.47%	19.4%

The chance that a newborn baby will die before reaching age five is 0.61% in Bulgaria and 4.05% in the Congo. Above is a chart with historical data on under-five mortality rates.