A think tank of economists is interested in how the distribution of family income has changed in Country X during the last 20 years. The summary measures and histograms shown below are generated for a sample of 500 family incomes, using the 1997 and 2017 income for each family in the sample.
Summary Measures (in thousands of dollars): 
Based on these results, discuss as completely as possible how the distribution of family income in Country X changed from 1997 to 2017.
Definitions:
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