_id	year	month	country_from	city_to	count
1	2013	1	Vietnam	Busan	23
2	2013	2	Vietnam	Busan	9
3	2013	3	Vietnam	Busan	13
4	2013	4	Vietnam	Busan	37
5	2013	5	Vietnam	Busan	215
6	2013	6	Vietnam	Busan	162
7	2013	7	Vietnam	Busan	355
8	2013	8	Vietnam	Busan	45
9	2013	9	Vietnam	Busan	298
10	2013	10	Vietnam	Busan	21
11	2013	11	Vietnam	Busan	9
12	2013	12	Vietnam	Busan	27