_id	year	month	country_from	city_to	count
1	2013	1	Vietnam	Incheon	6
2	2013	2	Vietnam	Incheon	56
3	2013	3	Vietnam	Incheon	57
4	2013	4	Vietnam	Incheon	33
5	2013	5	Vietnam	Incheon	161
6	2013	6	Vietnam	Incheon	326
7	2013	7	Vietnam	Incheon	515
8	2013	8	Vietnam	Incheon	461
9	2013	9	Vietnam	Incheon	156
10	2013	10	Vietnam	Incheon	102
11	2013	11	Vietnam	Incheon	97
12	2013	12	Vietnam	Incheon	78