Non-stationary individual and household income of poor, rich and middle classes in Mexico

Despite Mexican peso crisis in 1994 followed by a severe economic recession, individual and household income distributions in the period 1992-2008 always exhibit a two-class structure; a highly fluctuating high-income class adjusted to a Pareto power-law distribution, and a low-income class (including poor and middle classes) adjusted to either Log-normal or Gamma distributions, where poor agents are defined as those with income below the maximum of the uni-modal distribution. Then the effects of crisis on the income distributions of the three classes are briefly analysed.