Quarterly Sales Estimates for HGSI
| 03-2007 | 10.1 | 9 | 9.71 | 0 | 4/5/2007 |
| 06-2007 | 12.3 | 9.46 | 10.121 | 0.866 | 7/27/2007 |
| 09-2007 | 12.6 | 9.33 | 10.055 | 0.929 | 10/5/2007 |
| 12-2007 | 12.6 | 10 | 11.307 | 0.909 | 2/4/2008 |
| 03-2008 | 47.3 | 10.1 | 15.897 | 11.848 | 4/17/2008 |
| 06-2008 | 15.31 | 11 | 12.646 | 1.156 | 7/17/2008 |
| 09-2008 | 65.7 | 11.1 | 18.844 | 17.653 | 10/20/2008 |
| 12-2008 | 13.19 | 11.2 | 11.971 | 0.697 | 2/5/2009 |
| 03-2009 | 175 | 110 | 145.906 | 22.209 | 3/9/2009 |
| 06-2009 | 55.29 | 16.5 | 29.258 | 9.427 | 7/21/2009 |
| 09-2009 | 55.71 | 12.988 | 25.163 | 11.48 | 10/28/2009 |
| 12-2009 | 97.988 | 19.022 | 48.218 | 19.734 | 2/22/2010 |
| 03-2010 | 47.359 | 27.5 | 38.978 | 6.859 | 4/21/2010 |
| 06-2010 | 48.5 | 29.8 | 40.775 | 6.038 | 7/19/2010 |
| 09-2010 | 47.36 | 17.7 | 31.339 | 8.96 | 10/18/2010 |
| 12-2010 | 52.8 | 6.86 | 21.349 | 10.5 | 2/7/2011 |
| 03-2011 | 26.193 | 12.38 | 19.584 | 3.76 | 4/15/2011 |