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04-09/2004
Lets' make this simple. Without going into heavy,long drawn out detail,here's my personal opinion. 20th century & rock era only:
1955,1956,1957,1963,1964-1969,The Seventies,1982-1985,1987,1992,1994,1996.
Plain & simple. Don't ask me why. Later!
Skimming the ole' posts again and one day shy of 10 years later,I'm wondering.....
What in the world made me say 1992?

The only thing I can
think of is that's when #1 songs finally started being #1 for over 2 months or more.
Anyway,let me add 2005 to that as well.

After that,nothing really.