Table 2. BLOG analysis data amount

Division	Year	Data amount	Analytical data
I	1th 2000∼12th 2004	8,173	2,075
II	1th 2005∼12th 2009	120,957	1,984
III	1th 2010∼12th 2014	320,395	1,955
IV	1th 2015∼12th 2017	328,450	2,044
Total		777,975	8,058