1. US-Based Open Water Certified Diver Count
Total 2004
Compiled from NAUI, PADI, SDI and SSI Certified Diver Files
With quarterly comparisons to 2003, and total comparisons to
©DEMA 2005

2. DEMA, in cooperation with several diver training agencies compiled the data contained herein over the course of 2004 for the US Dive Market. The quarterly data was compiled in aggregate and then compared quarter by quarter to Total certification data for 2000 to 2004 is also provided.
DEMA wishes to thank NAUI, PADI, SDI and SSI for their unprecedented cooperation in this effort. DEMA also wishes to extend thanks to the DEMA Board of Directors under 2004 Research Committee Chair Wayne Hasson.
©DEMA 2005

3. Total Open Water Certified Divers (US) 2004, First Quarter
©DEMA 2005

4. Total Open Water Certified Divers (US) 2004, Second Quarter
©DEMA 2005

5. Total Open Water Certified Divers (US) 2004, Third Quarter
©DEMA 2005

6. Total Open Water Certified Divers (US) 2004, Fourth Quarter
©DEMA 2005

7. Total Open Water Certified Divers (US) for Each Quarter, Not Counting Probable Duplicates
©DEMA 2005

8. Comparison of Total Open Water Certified Divers for Each Quarter (US), Not Counting Probable Duplicates: 2003 and 2004
©DEMA 2005

9. Total Open Water Certified Divers (US) 2000 - 2004
©DEMA 2005