NEW YORK (AP) — Soaring gas prices and weakening job prospects left shoppers gloomier about the economy in May, sending a key barometer of consumer sentiment to its lowest level in almost 16 years.

The New York-based Conference Board said Tuesday that its Consumer Confidence Index dropped to 57.2, down from a revised 62.8 in April. Economists surveyed by Thomson Financial/IFR had expected a reading of 60.

The May reading marks the fifth straight month of decline and is the lowest since the index registered 54.6 in October 1992 when the economy was coming out of a recession.

Economists closely watch sentiment readings since consumer spending accounts for more than two-thirds of the nation's economic activity.