| Vulnerability status | 2002 | 2012 | 2015 | |||
| Land Area (km2) | % | Land Area (km2) | % | Land Area (km2) | % | |
| Extremely high | 83,553.72 | 88.86 | 83,938.20 | 89.27 | 83,937.12 | 89.27 |
| Very high | 3620.20 | 3.85 | 2949.32 | 3.14 | 2452.10 | 2.61 |
| High | 3002.04 | 3.19 | 2836.93 | 3.02 | 3128.64 | 3.33 |
| Moderate | 1641.30 | 1.75 | 820.15 | 0.87 | 2349.34 | 2.50 |
| Low | 782.81 | 0.83 | 2089.21 | 2.22 | 740.52 | 0.79 |
| Very low | 1426.43 | 1.52 | 1392.69 | 1.48 | 1418.78 | 1.51 |
| Total | 94,026.5 | 100.00 | 94,026.5 | 100.00 | 94,026.5 | 100.00 |