Year | NE | SE | SW | NW | Whole city |
1990 | 7.1 | 6.3 | 20.3 | 31.3 | 65 |
2005 | 7.3 | 7.8 | 24 | 40.3 | 79.4 |
2014 | 8.1 | 8.9 | 27.4 | 46.8 | 91.2 |