Table 1.

The number of counties and covered population by income.

GDP per Capita Quintile	2008		2010		2012		2014
	Number of Counties	Number of the Population (10,000)	Number of Counties	Number of the Population (10,000)	Number of Counties	Number of the Population (10,000)	Number of Counties	Number of the Population (10,000)
1st quintile (The poorest)	375	15,816	362	14,109	378	18,045	396	17,950
2nd quintile	375	19,026	362	18,173	378	19,868	395	19,572
3rd quintile	376	18,918	361	17,814	377	19,057	396	20,015
4th quintile	375	17,935	362	17,615	378	18,176	395	18,827
5th quintile (The richest)	375	17,676	362	17,707	378	18,018	396	19,375
Total	1876	89,371	1809	85,418	1889	93,164	1978	95,739