My students sometimes find the English names of the years confusing, and often, a direct translation of their native language names for the years is different to how most native English speakers would say it.
Here's how I do it:
1981: the year that I was born - 'nineteen eighty-one'
1999: the title of a famous song by Prince - 'nineteen ninety-nine'
2000: the year that people celebrated the new millennium - 'two thousand'
2001: the year of Stanley Kubrick's Space Odyssey movie title - 'two thousand and one'
2010: the year that Apple released the first iPad - 'twenty ten'
2012: the year of the London Olympics - 'twenty twelve'
2020: the year that many of us wish we could forget - 'twenty twenty'