For the first time since 1999, American employers have added more than 200,000 jobs a month for four straight months, the U.S. Labor Department reported Friday, offering more evidence that the U.S. economy is finally achieving sustained momentum despite faltering growth in Asia and Europe.

Last month’s gain of 217,000 jobs means the economy has finally recovered all the jobs lost to the Great Recession. And it coincides with indications that American consumers have grown more confident: Auto sales have surged and manufacturers and service companies are expanding.

“I don’t think we have a boom, but we have a good economy growing at about 3 percent,” said John Silvia, chief economist at Wells Fargo. “We’re pulling away from the rest of the world.”

On top of the positive jobs report, the ratings agency Standard & Poor’s said Friday that it that it was prepared to restore the U.S.’ gold-plated AAA rating if it saw continued bipartisan efforts in Washington to address long-term fiscal challenges.

S&P in 2011 downgraded its rating of U.S. creditworthiness for the first time, concerned about political stalemates, threats of a voluntary debt default and mounting budget deficits. The loss of the coveted top rating had little practical effect, but it tarnished the image of the world’s most modern economy.

Friday’sreport also helped put to rest fears of an incipient downturn that emerged last week after the government reported the economy had shrunk 1 percent in the first three months of the year. Investors greeted the news by pushing the Dow Jones Industrial Average and S&P 500 to record highs.

Still, Friday’s report showed that the unemployment rate remains unchanged from April, at 6.3 percent, pay remains subpar for many workers, millions who want full-time work are still stuck in part-time jobs and the number of people out of work for more than six months remains historically high.

Though the economy has regained the nearly 9 million jobs lost to the recession, more hiring is needed, because the working-age U.S. population has grown nearly 7 percent since the recession began. Economists at the liberal Economic Policy Institute estimate that 7 million more jobs would have been needed to keep up with population growth.

In addition, average wages have grown only about 2 percent a year since the recession ended, well below the long-run average annual growth of about 3.5 percent.

And unemployment has fallen from a 10 percent peak in 2009 partly for an unfortunate reason: Fewer people are working or seeking work. The percentage of adults who either have a job or are looking for one remained at a 35-year low in May.

Yet the United States is faring far better than most other major industrial nations.

Overall unemployment for the 18 countries that use the euro, for example, was 11.7 percent in April, though some European nations, such as Germany and Denmark, have much lower rates. On Thursday, Europe’s central bank cut interest rates and took other extraordinary steps to try to boost ultra-low inflation, encourage more lending and jump-start growth.

Japan is struggling to emerge from more than a decade of sluggish growth and deflation. And China has been undergoing a prolonged slowdown from explosive expansion and is at risk of slowing too sharply.

“The U.S. was incredibly aggressive” after the financial crisis and Great Recession, said Daniel Drezner, a professor of international politics at Tufts University. “Compared to Europe in particular, we did much more.”

The U.S. government approved stimulus spending and tax cuts, Drezner noted, while many European nations cut spending. The Federal Reserve slashed rates further than the European Central Bank did and launched bond purchases to ease long-term loan rates. Central banks in Japan and Europe have only recently considered the types of unconventional steps the Fed launched in 2008.

The solid U.S. hiring gains in May might be expected to lower the unemployment rate. But the two figures come from separate surveys. The job gains are derived from a survey of businesses, the unemployment rate from a survey of households.