Table:
Year ended December 31,

2017	2018	Change

Amounts in thousands of U.S. dollars

Net cash provided by operating activities	$223,630	$283,710	$60,080

Net cash used in investing activities	(74,599)	(692,999)	(618,400)

Net cash provided by financing activities	7,265	368,120	360,855

This image shows a table. Determine whether this table contains merged cells and output merged cell areas with the JSON format of {'top-left':(A, B), 'bottom-right':(C, D)}, where A, B, C and D represent the indices of the first row, the first column, the last row, and the last column in the merged region. Row and column indices are numberd from 1.

This table does not contain any merged cells.