How old is Leorio from Hunter x Hunter?

Leorio Paradinight, one of the main characters in Hunter x Hunter, is initially introduced as a 19-year-old during the Hunter Exam.

Original Hunter x Hunter Leorio Anime Cel

Leorio Paradinight, Heroes Wiki

Nendoroid Hunter x Hunter Leorio Action Figure JAPAN OFFICIAL

Is it weird that Leorio is 18 years old and he hangs out with two

Hunter x Hunter: Pop Up Parade Leorio

WCF Scale Leorio - HUNTER X HUNTER Statue - Power Studio [In Stock]

Leorio Paradinight Hunter X Hunter Anime Manga 3d Zip Hoodie - Teeruto

Vibration Stars Leorio Figure, Hunter x Hunter Figure

Original Hunter x Hunter Leorio & Kurapika Anime Cel

Why was Leorio done so badly in the Madhouse 2011 Hunter x Hunter