| 年份 | 2005 | 2007 | 2009 | 2011 | 2013 | 2015 |
| 全国 | 0.414 | 0.438 | 0.477 | 0.528 | 0.589 | 0.641 |
| 北京 | 0.634 | 0.665 | 0.715 | 0.756 | 0.817 | 0.878 |
| 上海 | 0.617 | 0.647 | 0.698 | 0.738 | 0.798 | 0.859 |
| 天津 | 0.564 | 0.595 | 0.646 | 0.686 | 0.747 | 0.808 |
| 浙江 | 0.637 | 0.667 | 0.718 | 0.758 | 0.819 | 0.879 |
| 辽宁 | 0.408 | 0.438 | 0.489 | 0.530 | 0.591 | 0.652 |
| 广东 | 0.599 | 0.629 | 0.679 | 0.719 | 0.780 | 0.840 |
| 江苏 | 0.588 | 0.618 | 0.669 | 0.709 | 0.770 | 0.830 |
| 福建 | 0.353 | 0.383 | 0.434 | 0.474 | 0.534 | 0.594 |
| 吉林 | 0.337 | 0.368 | 0.419 | 0.459 | 0.519 | 0.580 |
| 黑龙江 | 0.331 | 0.361 | 0.412 | 0.453 | 0.513 | 0.573 |
| 山东 | 0.326 | 0.356 | 0.407 | 0.448 | 0.509 | 0.570 |
| 河北 | 0.317 | 0.347 | 0.398 | 0.438 | 0.498 | 0.559 |
| 山西 | 0.293 | 0.323 | 0.374 | 0.415 | 0.475 | 0.536 |
| 内蒙古 | 0.313 | 0.367 | 0.420 | 0.489 | 0.502 | 0.577 |
| 宁夏 | 0.272 | 0.307 | 0.356 | 0.391 | 0.514 | 0.486 |
| 河南 | 0.436 | 0.466 | 0.517 | 0.557 | 0.618 | 0.679 |
| 陕西 | 0.401 | 0.431 | 0.485 | 0.542 | 0.639 | 0.696 |
| 湖北 | 0.459 | 0.490 | 0.540 | 0.580 | 0.641 | 0.701 |
| 海南 | 0.473 | 0.504 | 0.555 | 0.595 | 0.656 | 0.716 |
| 湖南 | 0.506 | 0.536 | 0.586 | 0.627 | 0.687 | 0.747 |
| 安徽 | 0.506 | 0.537 | 0.587 | 0.627 | 0.688 | 0.749 |
| 江西 | 0.507 | 0.537 | 0.588 | 0.628 | 0.689 | 0.750 |
| 新疆 | 0.421 | 0.444 | 0.440 | 0.539 | 0.595 | 0.610 |
| 青海 | 0.305 | 0.335 | 0.331 | 0.437 | 0.486 | 0.505 |
| 甘肃 | 0.283 | 0.303 | 0.312 | 0.408 | 0.432 | 0.499 |
| 重庆 | 0.320 | 0.352 | 0.392 | 0.486 | 0.582 | 0.617 |
| 四川 | 0. 289 | 0.329 | 0.346 | 0.374 | 0.433 | 0.479 |
| 广西 | 0.271 | 0.302 | 0.320 | 0.354 | 0.415 | 0.460 |
| 云南 | 0.291 | 0.344 | 0.347 | 0.391 | 0.519 | 0.543 |
| 贵州 | 0.224 | 0.246 | 0.266 | 0.358 | 0.374 | 0.412 |
| 西藏 | 0.328 | 0.341 | 0.351 | 0.390 | 0.405 | 0.482 |