For each week beginning on a given date, the figures show the number of sites that reported they are using the CDC 6.16.6 release.
| Week starting | Count |
|---|---|
| November 20th | 1 |
| November 13th | 1 |
| September 18th | 1 |
| August 7th | 1 |
| July 17th | 1 |
| June 19th | 1 |
| May 29th | 1 |
| May 22nd | 1 |
| May 15th | 1 |
| April 24th | 1 |
| April 10th | 1 |
| April 3rd | 1 |
| March 27th | 1 |
| March 6th | 1 |
| February 27th | 2 |
| February 20th | 1 |
| February 13th | 1 |
| February 6th | 1 |
| January 16th | 1 |
| January 9th | 2 |
| November 28th | 1 |
| November 7th | 1 |
| October 31st | 2 |
| October 24th | 1 |
| October 17th | 1 |
| October 10th | 3 |
| October 3rd | 2 |
| September 26th | 5 |
| September 19th | 2 |
| September 12th | 4 |
| September 5th | 2 |
| August 29th | 7 |
| August 22nd | 9 |
| August 15th | 8 |
| August 8th | 4 |
| August 1st | 6 |
| July 25th | 5 |
| July 18th | 6 |
| July 11th | 3 |
| July 4th | 8 |
| June 27th | 15 |
| June 20th | 34 |
| June 13th | 50 |
| June 6th | 48 |
| May 30th | 42 |
| May 23rd | 23 |
| May 16th | 29 |