20 years ago today - Sep 1, 1991

[General] Membership in the Church reached 8 million, about two years after membership hit the 7 million mark in December 1989.

[Source: Church News: Historical Chronology of The Church of Jesus Christ of Latter-day Saints, http://www.ldschurchnews.com/articles/58765/Historical-chronology-of-The-Church-of-Jesus-Christ-of-Latter-day-Saints.html]