Popular English-language dictionary Merriam-Webster has named the singular pronoun “They” as their Word of the Year for 2019.

Merriam-Webster has been releasing its Word of the Year list since 2003. The top word, along with the rest of the list, is determined by data, specifically the number of lookups received throughout the year and the percentage of increase over lookups from past years.

According to the dictionary’s website:

Our Word of the Year for 2019 is they. It reflects a surprising fact: even a basic term—a personal pronoun—can rise to the top of our data. Although our lookups are often driven by events in the news, the dictionary is also a primary resource for information about language itself, and the shifting use of they has been the subject of increasing study and commentary in recent years. Lookups for they increased by 313% in 2019 over the previous year.

English famously lacks a gender-neutral singular pronoun to correspond neatly with singular pronouns like everyone or someone, and as a consequence they has been used for this purpose for over 600 years.

More recently, though, they has also been used to refer to one person whose gender identity is nonbinary, a sense that is increasingly common in published, edited text, as well as social media and in daily personal interactions between English speakers. There’s no doubt that its use is established in the English language, which is why it was added to the Merriam-Webster.com dictionary this past September.

Nonbinary they was also prominent in the news in 2019. Congresswoman Pramila Jayapal (WA) revealed in April during a House Judiciary Committee hearing on the Equality Act that her child is gender-nonconforming and uses they. Singer Sam Smith announced in September that they now use they and them as pronouns. And the American Psychological Association’s blog officially recommended that singular they be preferred in professional writing over “he or she” when the reference is to a person whose gender is unknown or to a person who prefers they. It is increasingly common to see they and them as a person’s preferred pronouns in Twitter bios, email signatures, and conference nametags.

You can read the full top ten Words of the Year list here.