Can I get the dictionary's data size which has been created by "kuromoji" plugin?

Hello, I have created the indexes and I used the "kuromoji" plugin to "_all" fields.
I assume that Elasticsearch created the indexes and dictionary which has been created by "kuromoji" plugin.

I would like to know the dictionary's data size which has been created by "kuromoji".

I have the following 2 question.
1)I'd like to know calculation method of "kuromoji" plugin when it create the dictionary.
2)Where Can I find the data file which has been created by "kuromoji"?

sincerely.