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

Based on this table picture, can you identify any merged cells and give their coordinates in the JSON format {'top-left':(x, y), 'bottom-right':(z, w)}, where (x, y) and (z, w) correspond to the top-left and bottom-right (row_id, column_id) of the merged area? The row_id and column_id should start from 1 rather than 0.

The merged cell areas are as follows:
{'top-left':(1, 1), 'bottom-right':(2, 1)}
{'top-left':(2, 2), 'bottom-right':(2, 5)}.