What is the frequencies of CEFR levels (A1,A2,B1,B2,C1,C2) in million words.

I have a list of words that contain about 100000 word and there frequencies, I want to know the frequencies of CEFR levels to classify.

I found an [opinion](https://languagelearning.stackexchange.com/questions/3061/what-are-estimates-of-vocabulary-size-for-each-cefr-level) that suggests to divide the words with index, so the most common 500 words is A1 and next 1000 is A2 and so on, and I feel that this is a very naive way to classify words.

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