Quarterly Sales Estimates for ZRAN
| 12-2006 | 127.5 | 96.3 | 100.23 | 0 | 2/2/2007 |
| 03-2007 | 123 | 95 | 99.596 | 0 | 3/19/2007 |
| 06-2007 | 121.99 | 119 | 120.389 | 0.86 | 7/12/2007 |
| 09-2007 | 140.13 | 137.5 | 138.627 | 1.011 | 10/8/2007 |
| 12-2007 | 135 | 129.954 | 131.35 | 1.394 | 1/28/2008 |
| 03-2008 | 110 | 105 | 107.245 | 1.46 | 4/11/2008 |
| 06-2008 | 135 | 113.9 | 130.595 | 6.394 | 7/21/2008 |
| 09-2008 | 152.5 | 120 | 127.529 | 8.97 | 10/28/2008 |
| 12-2008 | 73 | 68 | 70.28 | 1.161 | 1/8/2009 |
| 03-2009 | 65.35 | 50 | 53.94 | 4.075 | 4/23/2009 |
| 06-2009 | 92.5 | 87 | 88.195 | 1.631 | 7/14/2009 |
| 09-2009 | 115 | 107.375 | 109.606 | 2.513 | 10/19/2009 |
| 12-2009 | 100 | 93 | 94.159 | 2.043 | 1/21/2010 |
| 03-2010 | 94.7 | 90 | 92.228 | 1.326 | 4/26/2010 |
| 06-2010 | 94 | 90.8 | 92.329 | 1.109 | 7/21/2010 |
| 09-2010 | 101 | 98.2 | 99.754 | 1.118 | 10/21/2010 |
| 12-2010 | 74.2 | 68.8 | 71.55 | 3.061 | 1/31/2011 |