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Interactive: Input a year in the yellow box

DATES OF INTEREST

  • 1918 - Extremely undervalued

  • 1929 - Extremely overvalued

  • 1937 - Extremely overvalued

  • 1962 - overvalued

  • 1975 - Extremely undervalued

  • 1990 - overvalued

  • 2000 - Extremely overvalued

  • 2007 - Upper range of Normal Zone

  • 2009 - Extremely undervalued

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