1 2 Gray Matter Heterotopia patients report severe insomnia (40%). 2  0 Gray Matter Heterotopia patients report moderate insomnia (0%). 3  2 Gray Matter Heterotopia patients report mild insomnia (40%). 4  1 Gray Matter Heterotopia patients report no insomnia (20%).
Economic stability refers to the an absence of excessive fluctuations in the macroeconomy. An economy with fairly constant output growth and low and stable inflation would be considered economically stable. An economy with frequent large recessions, a pronounced business cycle, very high or variable inflation, or frequent financial crises would be considered economically unstable.
Definition: An economic depression is a severe downturn that lasts several years. Fortunately, the U.S. economy has only experienced one economic depression. That's the Great Depression of 1929. It lasted ten years. The decline in the GDP growth rates were of a magnitude not seen since: 1930 -8.6 percent; 1931 -6.5 percent; 1932 -13.1 percent