1981 - Billy Squier (2)
1982 - Greg Kihn Band (2)
1987 - Ramones (3)
1988 - Grateful Dead (6), The Dickies (2)
1989 - Grateful Dead (15), Jerry Garcia Band (3), R.E.M. (3), Bob Weir/Rob Wasserman (3)
1990 - Grateful Dead (18), David Bowie (2)
1991 - Grateful Dead (17), Jerry Garcia Band (2), Little Feat (2)
1992 - Grateful Dead (12)
1993 - Grateful Dead (15), Jerry Garcia Band (2), X (2)
1994 - Grateful Dead (12), Traffic (2)
1995 - R.E.M. (7), Grateful Dead (5), Luscious Jackson (4)
1996 - Furthur Festival (3), George Clinton and the P-Funk All-Stars (2)
1997 - Furthur Festival (3), Allman Brothers (2), Robert Hunter (2), George Clinton...(2)
1998 - Furthur Festival (
, Allman Brothers (5), Pearl Jam (2)
1999 - R.E.M. (5), Allman Brothers (3)
2000 - Allman Brothers (3), Furthur Festival (3), Bob Dylan (3), Phil Lesh and Friends (3), Foo Fighters (2), Ratdog (2)
2001 - Phil Lesh and Friends (3), Allman Brothers (2), Go-Go's (2), Slickee Boys (2)
2002 - The Other Ones (5), Robert Hunter (5), Ratdog (2)
2003 - The Dead (4), R.E.M. (3), Robert Hunter (2), The Aquarium (2), Washington Social Club (2)
I'm sure there were tons of local bands I saw multiple times in the mid-80's - most notably the Slickee Boys, who I saw at least 15 times around '84-'88.