| 1 | A | B | C | D | E |
| --- | --- | --- | --- | --- | --- |
| 2 | distribution of top volunteers, by sex and age |  |  |  |  |
| 3 |  | distribution of top volunteers |  |  |  |
| 4 |  | 2013 | 2010 | 2007 | 2004 |
| 5 |  | percentage |  |  |  |
| 6 | total | 100 | 100 | 100 | 100 |
| 7 | men | 51 | 48 | 49 | 48 |
| 8 | women | 49 | 52 | 51 | 52 |
| 9 | age |  |  |  |  |
| 10 | 15 to 34 | 28 | 29 | 27 | 29 |
| 11 | 35 to 54 | 34 | 37 | 41 | 40 |
| 12 | 55 and over | 38 | 34 | 32 | 31 |

Question: what was the percentage of older canadians aged 55 and over represented of these top volunteers in 2013?
Answer: 38

Question: what was the percentage of older canadians aged 55 and over represented of these top volunteers in 2004?
Answer: 31