_id	year	month	country_from	city_to	count
1	2017	1	Vietnam	Busan	71
2	2017	2	Vietnam	Busan	55
3	2017	3	Vietnam	Busan	75
4	2017	4	Vietnam	Busan	20
5	2017	5	Vietnam	Busan	122
6	2017	6	Vietnam	Busan	61
7	2017	7	Vietnam	Busan	101
8	2017	8	Vietnam	Busan	86
9	2017	9	Vietnam	Busan	74
10	2017	10	Vietnam	Busan	37
11	2017	11	Vietnam	Busan	32
12	2017	12	Vietnam	Busan	12