Of course, witches in tough economic times, like teachers, still need a roof over their heads. About 29 percent of Americans believed in haunted houses in 1990. Perhaps bolstered by a strong real estate market, Americans figured more ghosts would invest, and, by 2001, 42 percent of Americans believed in haunted houses. As witches moved out of American minds, they may have moved out of their houses too. The percentage of haunted house believers dropped to 38 in 2005.
-- David Epstein, "American Ignorance" (Inside Higher Ed)