apostrophe in decades
How to write a decade in figures.
Write 1990s, the ’90s. Do not put an apostrophe before the s: not 1990’s. The apostrophe in ’90s marks the omitted 19, and it faces left. Do not write 90’s or 90s’.
Examples
UseShe grew up in the 1990s.
Usethe music of the ’90s
Avoidthe 1990’s
Avoidthe 90’s