Family Tree DNA, the largest commercial DNA testing company for genealogy, includes statistics on its front web page. Since April the statistics have been dynamically linked to the company database; before that they were rounded estimates.
The company has reported total records in its database since April 2004. In the year to April 2005 these grew 48%. In the 12 months to April 2006 either the methodology changed, or business grew, dramatically, by 211%. For the 8-1/2 months from April to mid November 2006 the growth was 41%, an annualized rate of 57%.
Data for the number of 12 marker haplotypes and number of surnames have grown at about half the rate of the number of records. I think this means that more genetic cousins are being tested rather than entirely new 12 marker genetic territory being found, encouraging for those of us hoping to find more genetic matches.
The table below shows the data on which these figures are based
| Date | Records | 12 marker haplotypes | Surnames |
| 01-Apr-04 | 19000 | 7800 | 7000 |
| 01-Jul-04 | 22000 | 8000 | 8000 |
| 01-Oct-04 | 24000 | 9000 | 9000 |
| 01-Jan-05 | 27000 | 9000 | 9000 |
| 01-Apr-05 | 30000 | 10000 | 10000 |
| 01-Jul-05 | 35000 | 11000 | 10000 |
| 01-Oct-05 | 40000 | 12000 | 15000 |
| 01-Jan-06 | 60000 | 15119 | 28921 |
| 01-Apr-06 | 83451 | 17147 | 46598 |
| 21-Apr-06 | 85226 | 17436 | 47377 |
| 20-Aug-06 | 104985 | 19905 | 53157 |
| 17-Sep-06 | 110176 | 20398 | 55288 |
| 15-Nov-06 | 117420 | 21236 | 57149 |