https://www.theguardian.com/books/2019/dec/10/they-beats-the-2019-word-of-the-year-merriam-webster

Merriam-Webster dictionary says look-ups for its winner have boomed since it became a favoured pronoun for non-binary individuals

They, a common pronoun that can be traced back to the 13th century, has been named word of the year by Merriam-Webster dictionary because of its growing usage for non-binary individuals.

The US dictionary, which has been in print for more than 150 years, said that look-ups for “they” increased by 313% in 2019 compared with the previous year, as the public investigated the word’s shifting use and its increasing prominence in the news.