this table displays the results of participation rate by type of volunteer activities. the information is grouped by types of activities (appearing as row headers), 2013 (ref), 2010, 2007 and 2004, calculated using percentage of volunteers units of measure (appearing as column headers)
Table:
types of activities
2013
2010
2007
2004

percentage of volunteers

organizing events
46
44
45
47

fundraising
45
45
44
46

sitting on a committee or board
33
33
33
36

teaching or mentoring
28
30
30
30

counselling or providing advice
26
28
28
26

collecting, serving or delivering food or other goods
25
28
27
25

office work, bookkeeping
22
23
24
25

other activities
20
15
18
10

coaching, referring or officiating
17
18
20
19

driving
17
17
20
20

providing health care or support
17
19
20
19

environmental protection
16
18
19
16

maintenance or repair
16
16
18
18

canvassing
10
14
13
15

first-aid, fire-fighting, or search and rescue
6
6
6
7

Respond the following question with the most concise answer possible from the table. Enclose the answer in the list of the following JSON object {"answer": ["YOUR ANSWER"]}. If more than one item applies, separate items with commas. Here is the table caption: 'this table displays the results of participation rate by type of volunteer activities. the information is grouped by types of activities (appearing as row headers), 2013 (ref), 2010, 2007 and 2004, calculated using percentage of volunteers units of measure (appearing as column headers)'. Answer this question using the table data: In which year is the prevalence of sitting on a committee or board less , 2004 or 2013?

{"answer": ["2013"]}