Numbers: Jan. 19, 2004

45.5% Americans who identify with the Republican Party, up from 40% a decade ago

45.2% Americans who identify with the Democratic Party, down from 49% a decade ago

408 Species that could be extinct by 2050 if global-warming trends continue

6.6 tons Average amount of greenhouse gases emitted annually by each American, an increase of 3.4% since 1990

$1.55 trillion Health-care spending in the U.S. in 2002, accounting for an unprecedented 15% of the nation's economy

$5,440 Average amount spent on each American, up 9.3% in a year, the largest spike in 11 years

$8.8 trillion Official value of the United Kingdom, as priced by British statisticians

$150,000 Sum that would be allotted to each of Britain's 58.8 million citizens if the value were divided equally

Sources: The Gallup Organization; Nature; Environmental Protection Agency; New York Times