The US economy has grown for 121 consecutive months following the Great Recession, marking the longest economic expansion in American history.

The economy has been on a growth spurt since June 2009 and now surpasses the previous record expansion set between March 1991 and March 2001 before the dot-com bubble burst.

The decade-long expansion has been fueled by job growth, record-low unemployment rates and low interest rates.

There were 21.4 million jobs created during the expansion after a loss of 9 million during the recession.

In another positive sign, wage increases over the last three years have been healthiest among the lowest-paid workers — showing a narrowing of the wage gap between high and low earners.

In May, average pay for the poorest one-quarter of workers surged 4.4 percent from a year earlier.

That’s compared with a 3.2 percent average increase for the richest quarter of workers, according to data compiled by the Federal Reserve Bank of Atlanta.

The wealth gap also shrank, as the proportion of income going to the poorest one-fifth of Americans rose from 6.4 percent in 2007 to 7.3 percent in 2015, the last year for which data is available.

The wealthiest one-fifth’s share of income declined from 51 percent to 48 percent over the same period, according to the Congressional Budget Office.

Overall household wealth — which includes home values, stock portfolios and bank accounts minus mortgages and credit-card debt — spiked 80 percent over the last decade.

More than one-third of those gains, however, went to the nation’s wealthiest 1 percent, while middle-class folks reaped one-quarter of the gains and the bottom half of the population enjoyed just 2 percent of the growth, Federal Reserve figures show.

​But while inflation has been low and wealth is rising, the pace of growth has been slower than pr​evious expansions — averaging 2.3 percent since the recession ended in June 2009. That’s compared with 3.9 percent growth in​ the 1990s and 4.2 percent in the 1980s.

​There are also worries that a recession may be at hand because history suggests we’re due for one. Other causes for concern are the US-China trade and tariff dispute and a sluggish global economy.

“It’s unusual to have gone so long without a recession” ​when looking at the economic data going back to the 1950s, ​said David Wessel, director of the Hutchins Center on Fiscal and ​M​onetary ​P​olicy at the Brookings Institution.​

While some indicators point to a recession, such as a slowdown in manufacturing output and ​a downturn in business confidence, continued strong consumer spending is still stoking the ­economy.

And the stock market continued to rise on Monday, partially because of the agreement reached between President Trump and Chinese President Xi Jinping during the G-20 summit to restart trade ­negotiations.

But the effects of that may be short-lived, according to John Normand, JPMorgan Chase’s head of cross-asset fundamental strategy.

“Nothing stimulative came out of the G-20,” he told Bloomberg Television, noting the agreement did not include tariff rollbacks.

Fed Chairman Jerome Powell, who has been under pressure from Trump to keep interest rates low, may cut rates to keep the economy humming because of the trade war with China.

Fed Board of Governors Vice Chair Richard Clarida said the US economy is “in a good place” but “uncertainties have increased along several dimensions.”

With Wire Services