In 2011/07:
Listening: 385
Reading: 315
Total: 700
In 2010/07:
Listening: 340
Reading: 185
Total: 525
Diff:
Listening: 340→385 (+45)
Reading: 185→315 (+130)
Total: 525→700 (+175)
どうしてこうなった: ruby-coreくらいでしか英語使ってないのに!; I did use English only at ruby-core...