Table:
2016
2017
change 2016 to 2017

number
percent

enplaned and deplaned passengers

domestic segments
83,694,751
88,229,824
5.4

transborder segments
27,221,599
28,559,297
4.9

other international segments
29,976,194
32,852,551
9.6

total
140,892,544
149,641,672
6.2

loaded/unloaded cargo
1,223,213
1,313,376
7.4

From the provided table image, locate any cells that are merged and list their regions as {'top-left':(x, y), 'bottom-right':(z, w)}, with (x, y) indicating the (row_id, column_id) of top-left cell and (z, w) the bottom-right cell. Both the row_id and column_id start from 1.

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