Number of articles in corpus and sample in Japanese

Total

Sample

Total

2013-2014

2014-2015

2015-2016

2016-2017

Total

2013-2014

2014-2015

2015-2016

2016-2017

Newspaper Title

650

731

589

843

2813

15

16

12

17

60

Asahi Shimbun⁵

275

400

266

344

1285

6

9

5

7

27

Nikkei newspaper⁶

239

198

145

315

897

5

3

3

7

18

2 Channel News Navigator⁷

166

133

178

184

661

4

2

4

4

14

650

731

589

843

2813

15

16

12

17

60