Reuven Glick and Kevin J. Lansing of the San Francisco Fed estimate that Americans will have to increase their household savings rate from 4 percent to 10 percent by 2018 to restore balance.
Wood, J. M. , et al. , " Effects of the 1989 San Francisco earthquake on frequency and content of nightmares. " J Abnorm Psychol, 1992. 101(2): p. 219-24.