Very few people will need or want the pre-2020 word
frequency data. If for some reason you do, the price
is $125 (academic) / $250 non-academic for the 60,000 word list.
It is only the single 60k
lemmatized list, rather than the four lists that are
included with the 2020 data. It is also based on a much
smaller version of COCA, with a smaller range of genres.
pre-2020 / 2020 data
us (email@example.com) if you are interested in this data.