Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Player | No.(s) | Height in Ft. | Position | Years for Rockets | School/Club Team/Country |
| --- | --- | --- | --- | --- | --- |
| Abdul-Aziz, Zaid Zaid Abdul-Aziz | 6, 27, 35 | 6-9 | Forward | 1972-75, 1977-78 | Iowa State |
| Acres, Mark Mark Acres | 42 | 6-11 | Center | 1992-93 | Oral Roberts |
| Acton, Charles Charles Acton | 24 | 6-6 | Forward | 1967-68 | Hillsdale |
| Adams, Don Don Adams | 10, 32 | 6-6 | Forward | 1970-72 | Northwestern |
| Adelman, Rick Rick Adelman | 12 | 6-1 | Guard | 1968-70 | Loyola Marymount |
| Alston, Rafer Rafer Alston | 12 | 6-2 | Guard | 2005-09 | Fresno State |
| Amaechi, John John Amaechi | 15 | 6-10 | Forward / Center | 2003 | Penn State |
| Andersen, David David Andersen | 13 | 6-11 | Center | 2009-10 | Australia |
| Anderson, Derek Derek Anderson | 8 | 6-5 | Guard | 2005-06 | Kentucky |
| Anderson, Richard Richard Anderson | 40 | 6-10 | Forward | 1986-88 | UC Santa Barbara |
| Anderson, Shandon Shandon Anderson | 40 | 6-6 | Guard | 1999-2001 | Georgia |
| Ariza, Trevor Trevor Ariza | 1 | 6-8 | Forward | 2009-10 | UCLA |
| Armstrong, Hilton Hilton Armstrong | 3 | 6-11 | Center / Forward | 2010 | Connecticut |
Question:
How may times did a player that attended Iowa state appear on the all time roster?
Answer:
1.0