It's a poor area where per capita income runs 28% below the national average.

FORBES: How Carlsbad got WIPPed

Per capita income has fallen in comparison with the national average by nearly 20%.

FORBES: California's Third Brown Era

In the 14 years before TABOR, per capita income growth in Colorado was below the national average.

FORBES: The Anachronism Of State Income Taxes

Per capita income there is 26 percent below the national average, and 27 percent of its residents are foreign-born, more than twice the national average, according to the U.S. Census Bureau.

CNN: STORY HIGHLIGHTS

Largely because of the national energy supply, and Putin's ability to exploit it, per capita personal income has increased 29% annually since 2001.

FORBES: Energy Tsar

In the 14 years after TABOR, per capita income growth was almost 20% (19.3%) higher than the national average.

FORBES: The Anachronism Of State Income Taxes

Such national traits can make up for other demographic shortcomings, such as Australia's relatively small population, or the low per capita income of a developing nation, such as China, which has invested heavily in its national sports programs.

WSJ: The U.S. Should Clobber the World in London