1993. The 'Golden Era' of Hip Hop revolves around this year. Before 2000 it was common for rappers to reference the current year on an album, and many of the important albums from this year cite the 'Nine Tre'.
"I don't wanna say Nine-Tre cause my man Extra P said don't say the years... So, it's for eternity, know what I'm sayin?" --Q-Tip, 'The Chase pt. II' from Midnight Marauders