| Views | |
| The interrelationship between different performance estimates | 58 |
| November 2012 | December 2012 | January 2013 | March 2013 | April 2013 | May 2013 | |
| The interrelationship between different performance estimates | 11 | 10 | 12 | 2 | 8 | 4 |
| Views | |
| United States of America | 30 |
| China | 13 |
| Russian Federation | 6 |
| Canada | 4 |
| South Africa | 4 |
| Iran | 1 |
| Views | |
| Beijing | 12 |
| Redwood City | 8 |
| Sayreville | 7 |
| Seattle | 5 |
| Toronto | 4 |
| Vanderbijlpark | 3 |
| Cape Town | 1 |
| Redmond | 1 |