Quarterly Sales Estimates for GT
| 03-2007 | 5005.7 | 4987 | 4996.35 | 0 | 4/16/2007 |
| 06-2007 | 4994 | 4732.2 | 4863.1 | 185.12 | 6/24/2007 |
| 09-2007 | 5068 | 5058.9 | 5063.45 | 6.434 | 10/12/2007 |
| 12-2007 | 4898 | 4555 | 4792.875 | 159.641 | 1/5/2008 |
| 03-2008 | 4881.7 | 4711 | 4832.55 | 81.78 | 4/22/2008 |
| 06-2008 | 5267 | 5188.4 | 5239.133 | 44.007 | 7/15/2008 |
| 09-2008 | 5236 | 4925 | 5133.75 | 144.619 | 10/22/2008 |
| 12-2008 | 5203 | 4739 | 4957.525 | 194.055 | 1/12/2009 |
| 03-2009 | 4288 | 4003 | 4108.4 | 126.56 | 4/22/2009 |
| 06-2009 | 4610.3 | 3627.1 | 4207.375 | 422.524 | 7/27/2009 |
| 09-2009 | 4758.2 | 4104.2 | 4341.5 | 286.381 | 10/5/2009 |
| 12-2009 | 4262 | 4160.8 | 4204.72 | 47.201 | 1/24/2010 |
| 03-2010 | 4044.7 | 3936.6 | 3990.65 | 76.438 | 4/5/2010 |
| 06-2010 | 4452 | 4280.3 | 4378.4 | 88.433 | 7/5/2010 |
| 09-2010 | 4878 | 4816.4 | 4850.133 | 31.216 | 10/19/2010 |
| 12-2010 | 4957.8 | 4727 | 4874.76 | 94.442 | 1/27/2011 |
| 03-2011 | 5188 | 4501 | 4806.166 | 349.857 | 4/14/2011 |