| 1 | A | B | C |
| --- | --- | --- | --- |
| 2 | demographic characteristics of regular force veterans, by era |  |  |
| 3 |  | earlier era | recent era |
| 4 | year of release | 1954 to 2003 | 1998 to 2012 |
| 5 | population size | 302,000 | 56,000 |
| 6 | mean age | 53 | 44 |
| 7 | female | 11 | 13 |
| 8 | married | 76 | 74 |

Question: what's the number of health indicators described for earlier era of regular force veterans who were released between 1954 and 2003?
Answer: 302000

Question: what's the number of health indicators described for recent era of regular force veterans who were released between 1998 and 2012?
Answer: 56000