_id	year	month	country_from	city_to	count
1	2007	1	Vietnam	Busan	11
2	2007	2	Vietnam	Busan	31
3	2007	3	Vietnam	Busan	6
4	2007	4	Vietnam	Busan	32
5	2007	5	Vietnam	Busan	38
6	2007	6	Vietnam	Busan	1
7	2007	7	Vietnam	Busan	22
8	2007	8	Vietnam	Busan	54
9	2007	9	Vietnam	Busan	12
10	2007	10	Vietnam	Busan	51
11	2007	11	Vietnam	Busan	32
12	2007	12	Vietnam	Busan	32