_id	year	month	country_from	city_to	count
1	2012	1	Vietnam	Incheon	54
2	2012	2	Vietnam	Incheon	43
3	2012	3	Vietnam	Incheon	1
4	2012	4	Vietnam	Incheon	52
5	2012	5	Vietnam	Incheon	34
6	2012	6	Vietnam	Incheon	32
7	2012	7	Vietnam	Incheon	3
8	2012	8	Vietnam	Incheon	1
9	2012	9	Vietnam	Incheon	1
10	2012	10	Vietnam	Incheon	64
11	2012	11	Vietnam	Incheon	1
12	2012	12	Vietnam	Incheon	14