Born Alive Infants in Bulgaria
| Years | Total | Born within wedlock | Born out-of-wedlock | % of the born out-of-wedlock to all born alive infants | % of the born out-of wedlock to the born within wedlock |
| 1980 | 128 190 | 114 166 | 14 024 | 10,9 | 12,3 |
| 1985 | 118 955 | 105 001 | 13 954 | 11,7 | 13,3 |
| 1989 | 112 289 | 99 438 | 12 851 | 11,4 | 12,9 |
| 1990 | 105 180 | 92 128 | 13 052 | 12,4 | 14,2 |
| 1995 | 71 967 | 53 448 | 18 519 | 25,7 | 34,7 |
| 1996 | 72 188 | 51 904 | 20 284 | 28,1 | 39,1 |
| 1997 | 64 125 | 44 872 | 19 253 | 30,0 | 42,9 |
| 1998 | 65 361 | 44 799 | 20 562 | 31,5 | 45,9 |
| 1999 | 72 291 | 46 947 | 25 344 | 35,1 | 54,0 |
| 2000 | 73 628 | 45 417 | 28 211 | 38,3 | 62,1 |
| 2001 | 68 180 | 39 514 | 28 666 | 42,0 | 72,6 |
| 2003* | 67 908 | 36 836 | 31 072 | 45,8 | 84,4 |
Source: Statistical annual'1991;
Statistical annual'2001;
Statistical annual'2002;
* In Sega newspaper, March 17, 2004 (according to NSI data).
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