4-15 Age-specific Fertility Rate of Childbearing Women by Age of Mother and Birth Order (2004.11.1-2005.10.31)
Data in this table are obtained from the 1% Population Sample Survey in 2005. The sampling fraction is 1.325%.
Age
	Average Number	Births	1st Births	2nd Births	3rd Births	Fertility	1st Births	2nd Births	3rd Births
	of  Childbearing	(person)			and over	Rate			and over
	Women (person)
Total	4676587	161042	101383	50997	8662	34.44	21.68	10.9	1.85
15-19	664051	4209	3993	205	11	6.34	6.01	0.31	0.02
15	159681	17	17			0.11	0.11
16	142241	94	88	5		0.66	0.62	0.04
17	138374	415	402	12	1	3.00	2.91	0.08	0.01
18	119925	1072	1019	50	3	8.94	8.50	0.42	0.02
19	103829	2611	2466	137	7	25.14	23.75	1.32	0.07
20-24	540714	61889	55745	5584	560	114.46	103.09	10.33	1.04
20	99451	6735	6344	368	23	67.72	63.79	3.70	0.23
21	101725	11016	10302	669	45	108.30	101.27	6.58	0.45
22	113155	13947	12802	1056	89	123.25	113.13	9.33	0.79
23	119600	15891	14169	1564	158	132.87	118.47	13.08	1.32
24	106783	14300	12128	1927	244	133.91	113.58	18.05	2.29
25-29	581947	53367	33103	17693	2571	91.70	56.88	30.40	4.42
25	115252	13794	10829	2614	351	119.69	93.96	22.68	3.05
26	113871	11978	8299	3213	467	105.19	72.88	28.21	4.10
27	110544	10037	6114	3434	488	90.79	55.31	31.07	4.41
28	115952	9082	4511	3966	604	78.32	38.91	34.20	5.21
29	126327	8477	3350	4466	661	67.10	26.51	35.35	5.23
30-34	758911	30521	6925	20404	3192	40.22	9.12	26.89	4.21
30	133869	7660	2390	4618	651	57.22	17.86	34.50	4.86
31	144698	7401	1782	4893	727	51.15	12.31	33.81	5.02
32	153716	6196	1185	4347	665	40.31	7.71	28.28	4.32
33	157343	5055	860	3604	591	32.12	5.46	22.90	3.76
34	169285	4210	709	2943	559	24.87	4.19	17.38	3.30
35-39	834137	9157	1275	6177	1705	10.98	1.53	7.41	2.04
35	169913	3102	452	2195	456	18.26	2.66	12.92	2.68
36	183370	2538	367	1729	441	13.84	2.00	9.43	2.41
37	158828	1605	215	1073	317	10.11	1.35	6.76	1.99
38	153068	1076	125	690	261	7.03	0.82	4.51	1.71
39	168958	836	116	490	230	4.95	0.68	2.90	1.36
40-44	707521	1447	240	749	458	2.05	0.34	1.06	0.65
40	164217	553	84	327	142	3.37	0.51	1.99	0.86
41	177276	378	59	201	117	2.13	0.33	1.13	0.66
42	177644	284	47	120	118	1.60	0.26	0.68	0.66
43	100442	122	20	60	42	1.22	0.20	0.60	0.42
44	87943	110	30	41	40	1.26	0.34	0.46	0.45
45-49	589306	451	101	185	164	0.77	0.17	0.31	0.28
45	96175	84	14	42	28	0.87	0.14	0.44	0.29
46	105700	92	28	38	26	0.87	0.27	0.36	0.25
47	131737	80	14	34	33	0.61	0.11	0.26	0.25
48	128958	100	22	36	41	0.77	0.17	0.28	0.32
49	126735	96	23	36	37	0.76	0.18	0.28	0.29