WASHINGTON (AP) — When President Barack Obama took office in January 2009 in the midst of the Great Recession, the economy was hemorrhaging jobs. Employers were panicking in the face of plummeting demand and a financial crisis that had frozen credit.

In March 2009 alone, 823,000 jobs disappeared. When the bleeding finally stopped in February 2010, 8.7 million jobs were gone. The unemployment rate hit a painful 10 percent — a quarter-century high — in October 2009.

Eight years later, the job market is in infinitely better shape. The unemployment rate is 4.7 percent. Jobs have been added for 75 straight months, the longest such streak on record.

But many other trends, not all of them positive, have reshaped the job market over the past eight years:

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A SMALLER SHARE OF AMERICANS HAVE JOBS

Hiring has been solid yet still hasn't kept up with population growth. The proportion of Americans with jobs — essentially the flip side of the unemployment rate — dropped a full percentage point under Obama. An aging society has turbocharged retirements. And many workers, especially less-educated men, have become discouraged about finding jobs with decent pay and have stopped looking.

FILE - In this July 19, 2016, file photo, a job applicant attends a job fair in Miami Lakes, Fla. President Barack Obama came in amid horrendous recession, since then has had 75 months straight months of job growth. A smaller share of Americans are at work, this is because of dropouts, including the disabled. (AP Photo/Lynne Sladky, File)

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AUTOMATION AND GLOBALIZATION ERASE ROUTINE JOBS

Routine work on factory assembly lines and as office clerks has declined, in some cases lost to computers, robots and inexpensive imported goods. Factory jobs have fallen 2.4 percent since January 2009. The number of people working as office administrators is down 2.5 percent.

FILE - In this Aug. 21, 2015 photo, a man works amid orange robot arms at Rapoo Technology factory in southern Chinese industrial boomtown of Shenzhen. The job market has changed under President Barack Obama's 8 years. Manufacturing, office admin work has fallen, due to globalization and automation. (AP Photo/Vincent Yu)

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MORE HIGH- AND LOW-PAYING JOBS

Those routine jobs typically paid middle-income wages. As they have faded, both higher- and lower-paying jobs have grown faster. The number of jobs in computer networking and software development has soared 42 percent in eight years. Data analysis has enjoyed job growth of 18 percent. On the lower-paying end, jobs at restaurants and hotels have jumped 19 percent.

FILE - In this April 14, 2016, file photo, union organizers, students, and supporters for a $15 an hour wage march through the Oakland section Pittsburgh. The job market has changed under President Barack Obama's 8 years. IT and engineering, scientific research jobs have grown strongly; restaurant, hotel jobs on lower end as well. (AP Photo/Keith Srakocic, File)

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MOST NEW JOBS GO TO COLLEGE GRADUATES

The ranks of employed college graduates jumped 22 percent under Obama, while the number of employed people with only a high school degree fell 4 percent. That partly reflects demographic trends: Older, less-educated Americans retire and are replaced by younger people more likely to have college degrees. But it also points to rising demand for high-skilled workers.

FILE - In this May 16, 2008 file photo, Briarwood College graduate Michelle Jacovino gives the thumbs up sign while preparing for commencement in Southington, Conn. The job market has changed under President Barack Obama's 8 years. Most new jobs have gone to recent graduates. (Mike Orazzi/The Bristol Press via AP)

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SLOW PAY GROWTH

Over the past year, average hourly pay has risen 2.9 percent, the healthiest increase in seven years. Yet for most of the recovery since the Great Recession, wages have struggled, growing closer to 2 percent. In a more robust economy, pay gains are typically close to 3.5 percent a year.

FILE - In this June 6, 2015, file photo, a customer, bottom, pays for goods while shopping at the Atlanta Farmers Market in Atlanta. President Barack Obama came in amid horrendous recession, since then has had 75 months straight months of job growth. But wage growth has been slow. (AP Photo/David Goldman, File)

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MORE PART-TIMERS

Thanks in part to strong hiring gains at restaurants, bars, hotels and retailers, more Americans have part-time jobs. In many cases, they prefer it that way. The number of part-timers who would prefer full-time work has fallen nearly 30 percent under Obama. And the number of people working part-time by choice — a much larger number— has grown 13 percent in the past eight years.

FILE - In this March 11, 2009 file photo, potential workers sit inside the Labor Ready temporary employment agency in the hope of getting a day job in Warren, Ohio. President Barack Obama came in amid horrendous recession, since then has had 75 months straight months of job growth. More Americans are working part-time. (AP Photo/Amy Sancetta)

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MORE ARE WORKING TEMP AND 'GIG' JOBS

Businesses, under pressure to grow profits and counter cheaper competition overseas, have sought to hold down labor costs. Temporary hiring has been one way to do that. Temp jobs skyrocketed 52 percent during Obama's administration, to nearly 3 million, including at auto plants and hospitals.

FILE - In this July 15, 2015, file photo, Uber driver Karim Amrani sits in his car parked near the San Francisco International Airport parking area in San Francisco. President Barack Obama came in amid horrendous recession, since then has had 75 months straight months of job growth. The job market has changed in those 8 years, as more Americans are working temp and "Gig" jobs. (AP Photo/Jeff Chiu, File)

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YOUNG WORKERS COME IN AS ELDERLY RETIRE

The influx of the millennial generation, the largest in the U.S., is changing the face of the working world. They are replacing retiring baby boomers, usually at lower pay, which has held down overall wages throughout the recovery. Millennials have also spurred more companies to adopt tech-style workplaces, with open floor plans, bean-bag chairs, and free food.

FILE- This Sept. 19, 2013, file photo shows workers at the Target Technology Innovation Center office in San Francisco. The job market has changed under President Barack Obama's 8 years. Young people are flooding in as the elderly retire. (AP Photo/Jeff Chiu, File)