1/2 bottle soy sauce, partially full jar of cocktail onions...

After three and a half long years, my in-laws have finally sold their house and are moving out of San Diego this week. R and I have inherited their pantry contents that they didn't feel like transporting. I spent the morning combining the contents of various sauce and liquor bottles with their partially full twins from our own supply. We received one massive bottle of Tabasco, so aged that the bright red pigments had all oxidized to a deep brown-red. As my in-laws never cook spicy food, one has to wonder why the purchased such a large container of hot sauce. I'm hoping to use the style of the label to date the container. Anyone know when they started requiring nutrition facts on labels?