| 1980 | 1981 | 1982 | 1983 | 1984 | 1985 | 1986 | 1987 | 1988 | 1989 | 1990 | 1991 | 1992 | 1993 | |
| Northeast | 9 | 11 | 11 | 16 | 11 | 10 | 9 | 10 | 11 | 10 | 11 | 10 | 8 | 9 |
| Heilongjiang | 5 | 5 | 4 | 10 | 5 | 5 | 4 | 5 | 5 | 4 | 3 | 2 | 3 | 3 |
| Liaoning | 2 | 3 | 5 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 5 | 3 | 3 | 3 |
| Jilin | 2 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 3 | 3 | 3 | 5 | 2 | 3 |
| North | 14 | 17 | 18 | 18 | 21 | 20 | 22 | 27 | 27 | 27 | 29 | 31 | 34 | 30 |
| Shandong | 3 | 4 | 4 | 4 | 5 | 4 | 5 | 6 | 7 | 7 | 8 | 8 | 8 | 9 |
| Hebei | 3 | 3 | 3 | 4 | 4 | 5 | 5 | 6 | 6 | 5 | 5 | 2 | 5 | 5 |
| Beijing | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 2 | 1 | 1 |
| Tianjin | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 |
| Henan | 5 | 6 | 8 | 7 | 7 | 7 | 8 | 10 | 10 | 11 | 12 | 14 | 15 | 12 |
| Shanxi | 2 | 2 | 2 | 3 | 4 | 3 | 3 | 3 | 3 | 3 | 3 | 5 | 3 | 3 |
| Northwest | 9 | 9 | 11 | 9 | 10 | 10 | 12 | 13 | 12 | 10 | 12 | 13 | 12 | 10 |
| Shaanxi | 4 | 3 | 4 | 3 | 3 | 3 | 4 | 5 | 4 | 4 | 5 | 5 | 5 | 4 |
| Gansu | 2 | 1 | 4 | 2 | 2 | 2 | 3 | 3 | 3 | 2 | 3 | 2 | 2 | 2 |
| Nei Monggol | 1 | 2 | 3 | 3 | 4 | 4 | 3 | 3 | 3 | 3 | 2 | 3 | 3 | 2 |
| Ningxia | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 1 | 1 | 2 | 0 |
| Xinjiang | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 1 | 1 | 2 | 0 | 2 |
| Qinghai | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| East | 31 | 38 | 54 | 57 | 56 | 64 | 79 | 96 | 94 | 88 | 84 | 91 | 63 | 65 |
| Zhejiang | 24 | 28 | 41 | 43 | 42 | 50 | 63 | 72 | 72 | 65 | 63 | 68 | 53 | 50 |
| Jiangsu | 3 | 5 | 6 | 8 | 9 | 8 | 10 | 14 | 14 | 14 | 12 | 12 | 10 | 8 |
| Shanghai | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 0 | 1 | 1 | 3 | 0 | 1 |
| Anhui | 3 | 4 | 5 | 6 | 5 | 5 | 6 | 9 | 8 | 8 | 8 | 8 | 0 | 6 |
| Central | 11 | 12 | 16 | 14 | 17 | 18 | 18 | 21 | 17 | 18 | 18 | 22 | 21 | 22 |
| Hubei | 5 | 5 | 8 | 6 | 7 | 7 | 8 | 10 | 9 | 8 | 8 | 9 | 7 | 8 |
| Hunan | 3 | 3 | 4 | 4 | 5 | 4 | 4 | 4 | 3 | 3 | 3 | 4 | 5 | 4 |
| Jiangxi | 3 | 4 | 5 | 4 | 5 | 7 | 6 | 7 | 5 | 7 | 7 | 9 | 9 | 10 |
| South | 9 | 10 | 11 | 12 | 14 | 14 | 13 | 13 | 15 | 14 | 16 | 17 | 18 | 17 |
| Guangdong | 3 | 3 | 4 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 6 | 6 | 8 | 7 |
| Guangxi | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 2 | 2 | 2 | 3 | 3 | 3 | 3 |
| Fujian | 4 | 5 | 5 | 5 | 7 | 7 | 7 | 6 | 8 | 7 | 7 | 8 | 7 | 7 |
| Hainan | na | na | na | na | na | na | na | na | 0 | 0 | 0 | 0 | 0 | 0 |
| Southwest | 13 | 16 | 18 | 18 | 19 | 19 | 19 | 24 | 19 | 22 | 23 | 23 | 22 | 22 |
| Sichuan | 9 | 11 | 13 | 13 | 13 | 13 | 14 | 17 | 14 | 18 | 17 | 18 | 18 | 17 |
| Guizhou | 1 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 0 | 0 | 1 | 1 | 1 | 1 |
| Yunnan | 3 | 3 | 4 | 3 | 4 | 4 | 3 | 4 | 4 | 4 | 5 | 4 | 3 | 4 |
| Xizang | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
| Sum of above | 96 | 112 | 138 | 143 | 148 | 155 | 172 | 204 | 195 | 189 | 193 | 207 | 178 | 175 |
| SSB total | 96 | 110 | 136 | 143 | 148 | 155 | 172 | 204 | 195 | 189 | 193 | 206 | 178 | 175 |
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