Table:
enterprise size class
2008
2014
variation of number

number
share
number
share

between 1 and 4
662,589
64.4
707,075
64.9
6.7

between 5 and 9
183,979
17.9
187,773
17.2
2.1

between 10 and 19
97,574
9.5
102,493
9.4
5.0

between 20 and 49
56,411
5.5
61,520
5.6
9.1

between 50 and 99
16,991
1.7
18,596
1.7
9.4

between 100 and 249
7,566
0.7
8,219
0.8
8.6

between 250 and 499
1,770
0.2
1,893
0.2
6.9

between 500 and 999
737
0.1
805
0.1
9.2

1,000 and above
780
0.1
762
0.1
-2.3

total
1,028,397
100.0
1,089,136
100.0
5.9

In tables, merged cells are often found and we can denote them as JSON {'top-left':(R1, C1), 'bottom-right':(R2, C2)}, with '(R1, C1)' and '(R2, C2)' indicating the (row_id, column_id) of the top-left and bottom-right cells of the merged region. Please scan the table image provided, find all occurrences of merged cells, and return their coordinates in the stated format. It's important to remember that row and column IDs begin from 1.

The merged cell regions are as follows:
{'top-left':(1, 1), 'bottom-right':(2, 1)}
{'top-left':(1, 2), 'bottom-right':(1, 3)}
{'top-left':(1, 4), 'bottom-right':(1, 5)}
{'top-left':(1, 6), 'bottom-right':(2, 6)}.