Washington ? Brace yourself: The recession is projected to worsen this year.

The country stands to lose a sizable chunk of economic activity in 2009 as consumers at home and abroad retrench in the face of persistent economic troubles. And the U.S. unemployment rate — now at 7.6 percent, the highest in more than 16 years — is expected hit a peak of 9 percent this year.

That gloomy outlook came from leading forecasters in the latest survey by the National Association for Business Economics to be released today. The new estimates are roughly in line with other recent projections, including those released last week by the Federal Reserve.

“The steady drumbeat of weak economic and financial market data have made business economists decidedly more pessimistic on the economic outlook for the next several quarters,” said NABE president Chris Varvares, head of Macroeconomic Advisers.

All told, Varvares and his fellow forecasters now expect the economy to shrink by 1.9 percent this year, a much deeper contraction than the 0.2 percent dip projected in the fall.

If the new forecast is correct, it would mark the first time since 1991 the economy actually contracted over a full year and would be the worst showing since 1982, when the country had suffered through a severe recession.

Vanishing jobs, shrinking nest eggs, rising foreclosures and tanking home values have forced American consumers to cut back, which in turn has caused businesses to lay off workers and slash costs in other ways, feeding a vicious downward cycle for the economy.

The current recession, which started in December 2007, is posing a major challenge to Washington policymakers, including President Barack Obama and Fed Chairman Ben Bernanke. That’s because its root causes — a housing collapse, credit crunch and financial turmoil — are the worst since the 1930s and don’t lend themselves to easy or quick fixes.

“As the news on the economy has darkened, so too, have the forecasts,” said Ken Mayland, president of ClearView Economics. “We are suffering a period of maximum stress on the economy.”

The economy is expected to remain feeble this year — even with new efforts by the administration and Congress to provide relief.

Just over the past few weeks, a $787 billion recovery package of increased government spending and tax cuts was signed into law, the president unveiled a $75 billion plan to stem home foreclosures and Treasury Secretary Timothy Geithner said as much as $2 trillion could be plowed into the financial system to jump-start lending.

In terms of lost economic activity in 2009, the biggest hit will come in the first six months, forecasters said.

NABE forecasters now expect the economy to slide backward at a staggering pace of 5 percent in the current January-March quarter. That’s a sharp downgrade from the 1.3 percent annualized drop projected in the old survey.

“Further pronounced weakness in housing and deteriorating labor markets underscore the risks for 2009,” Varvares said.