From February 2nd, 2015 to February 16th, 2018, 67% user give 5-star rating, 33% user give 4-star rating. for ngram viewer chrome extension.
It’s okay and handy, but a show stopper for me is that it doesn’t “unfold” requests containing asterisks, as in “hello *_NOUN”. The original website would show all nouns that could be in place, along with their popularity dynamics.
What a cool thing!!
Does exactly what it should, perfect for my needs!