"% of households with..." raw data indicators are not of a sufficient quality to measure changes in economic conditions. We'd at least need to refer to a consensus measure of poverty, where goods deemed to be necessities are determined through questionnaire approaches. Even then we only have a static understanding of deprivation. A better measure would look at income mobility, with some reference to inter-temporal income distributions. It should be noted that, if anything, the US is experiencing greater stagnation in its social mobility rates. The poor therefore can expect longer periods of relatively low consumption levels, ensuring a dynamic deterioration in their economic condition