Figure 3d. Quits levels of firm-based size classes, by number of employees, seasonally adjusted, December 2000 to December 2017
Month and year Size class 1 (1–49 employees) Size class 2 (49–449 employees) Size class 3 (500+ employees)

Dec 2000

688,491 858,796 1,372,443

Jan 2001

675,894 926,283 1,529,917

Feb 2001

712,799 919,470 1,459,975

Mar 2001

696,614 967,790 1,383,867

Apr 2001

806,220 895,794 1,508,921

May 2001

701,094 857,741 1,449,119

Jun 2001

733,549 815,695 1,331,864

Jul 2001

719,171 806,145 1,281,777

Aug 2001

710,459 772,728 1,236,713

Sep 2001

740,207 775,051 1,104,059

Oct 2001

640,730 781,065 1,295,891

Nov 2001

666,793 683,972 1,130,349

Dec 2001

686,227 689,962 1,073,741

Jan 2002

634,797 793,121 1,221,691

Feb 2002

649,990 747,294 1,131,048

Mar 2002

646,552 693,719 1,090,011

Apr 2002

674,154 738,685 1,170,638

May 2002

666,989 771,302 1,125,675

Jun 2002

653,095 740,848 1,112,433

Jul 2002

713,048 723,466 1,093,317

Aug 2002

765,623 672,167 1,018,474

Sep 2002

755,326 637,328 1,070,291

Oct 2002

710,392 661,742 1,047,456

Nov 2002

661,364 656,499 1,024,216

Dec 2002

731,875 677,682 1,044,808

Jan 2003

705,989 661,567 947,833

Feb 2003

739,256 616,407 1,028,342

Mar 2003

670,236 645,578 980,550

Apr 2003

635,076 650,170 952,741

May 2003

621,849 629,647 951,636

Jun 2003

703,351 590,765 943,416

Jul 2003

615,282 640,980 932,590

Aug 2003

622,410 664,756 927,271

Sep 2003

680,538 674,160 922,624

Oct 2003

699,139 669,168 983,598

Nov 2003

713,769 674,046 982,160

Dec 2003

732,209 684,591 994,712

Jan 2004

690,277 620,047 973,272

Feb 2004

740,860 684,658 890,489

Mar 2004

810,244 654,597 1,000,868

Apr 2004

812,862 662,541 1,050,836

May 2004

704,569 643,003 980,542

Jun 2004

753,688 729,022 1,007,214

Jul 2004

773,023 702,164 1,008,262

Aug 2004

738,229 729,282 1,072,867

Sep 2004

667,113 725,853 1,055,330

Oct 2004

791,255 711,022 1,011,608

Nov 2004

830,327 724,264 1,040,618

Dec 2004

791,552 750,415 1,067,580

Jan 2005

834,883 750,942 1,127,105

Feb 2005

771,039 733,241 1,070,329

Mar 2005

830,484 768,323 1,122,726

Apr 2005

807,615 761,500 1,086,193

May 2005

837,558 797,039 1,093,937

Jun 2005

779,941 747,548 1,112,881

Jul 2005

760,143 763,530 1,141,093

Aug 2005

880,076 752,292 1,140,897

Sep 2005

906,454 825,651 1,154,204

Oct 2005

813,872 779,161 1,151,119

Nov 2005

772,856 782,354 1,156,844

Dec 2005

803,855 757,443 1,105,770

Jan 2006

778,852 772,633 1,181,913

Feb 2006

794,389 834,619 1,220,237

Mar 2006

797,119 828,915 1,249,143

Apr 2006

782,612 713,431 1,123,852

May 2006

848,053 759,579 1,236,026

Jun 2006

846,056 780,470 1,195,953

Jul 2006

846,574 760,212 1,148,865

Aug 2006

814,817 780,704 1,221,635

Sep 2006

755,881 777,263 1,246,682

Oct 2006

762,990 741,483 1,207,098

Nov 2006

770,442 784,045 1,308,519

Dec 2006

814,792 789,636 1,251,376

Jan 2007

749,681 781,557 1,255,535

Feb 2007

779,627 795,966 1,284,998

Mar 2007

778,216 749,166 1,314,218

Apr 2007

723,858 793,072 1,217,480

May 2007

773,747 760,656 1,277,818

Jun 2007

716,696 721,330 1,211,935

Jul 2007

778,689 783,758 1,188,841

Aug 2007

749,433 817,046 1,213,798

Sep 2007

662,615 678,745 1,173,726

Oct 2007

748,481 760,128 1,218,366

Nov 2007

693,780 736,875 1,198,611

Dec 2007

736,626 707,605 1,217,316

Jan 2008

735,993 720,214 1,198,290

Feb 2008

664,102 762,150 1,188,977

Mar 2008

680,049 707,956 1,041,678

Apr 2008

823,832 765,830 1,133,732

May 2008

665,564 694,358 1,096,485

Jun 2008

677,059 718,861 1,085,310

Jul 2008

653,783 648,919 1,071,306

Aug 2008

583,043 616,715 1,078,048

Sep 2008

634,282 633,546 1,035,774

Oct 2008

677,387 603,297 998,961

Nov 2008

577,538 540,861 923,779

Dec 2008

537,089 515,618 969,261

Jan 2009

529,922 536,147 864,229

Feb 2009

558,192 471,274 792,017

Mar 2009

471,418 426,686 754,137

Apr 2009

428,698 410,975 763,187

May 2009

473,246 408,252 744,456

Jun 2009

487,222 411,828 722,398

Jul 2009

419,835 397,357 708,741

Aug 2009

468,283 382,238 652,236

Sep 2009

504,105 381,325 645,607

Oct 2009

442,745 408,392 692,159

Nov 2009

516,353 450,275 776,069

Dec 2009

515,686 405,169 730,918

Jan 2010

510,660 363,589 699,744

Feb 2010

490,018 425,744 707,679

Mar 2010

479,440 442,164 766,726

Apr 2010

512,106 459,460 810,107

May 2010

447,570 447,550 776,520

Jun 2010

508,851 483,438 795,632

Jul 2010

452,044 440,697 789,923

Aug 2010

527,736 433,737 768,399

Sep 2010

519,033 478,350 808,018

Oct 2010

515,147 449,122 805,140

Nov 2010

486,585 454,395 776,167

Dec 2010

562,546 498,837 827,706

Jan 2011

441,775 467,275 788,344

Feb 2011

503,549 461,080 813,066

Mar 2011

486,034 478,908 905,772

Apr 2011

504,913 501,133 803,350

May 2011

524,983 496,052 844,414

Jun 2011

530,524 453,016 862,843

Jul 2011

509,213 479,946 852,246

Aug 2011

518,567 531,024 834,725

Sep 2011

563,764 523,082 839,462

Oct 2011

552,970 471,729 800,512

Nov 2011

514,430 496,021 854,266

Dec 2011

532,999 489,462 833,249

Jan 2012

496,350 480,182 828,739

Feb 2012

537,483 504,777 874,486

Mar 2012

615,403 554,335 901,094

Apr 2012

538,230 487,042 955,671

May 2012

586,695 507,503 925,597

Jun 2012

538,579 582,971 908,371

Jul 2012

617,266 538,992 798,236

Aug 2012

549,497 511,637 916,865

Sep 2012

532,176 481,138 873,316

Oct 2012

541,474 492,973 841,616

Nov 2012

517,091 488,220 916,786

Dec 2012

538,521 528,846 947,152

Jan 2013

641,914 599,650 886,064

Feb 2013

616,038 552,770 954,026

Mar 2013

563,995 527,986 909,623

Apr 2013

594,817 639,625 938,067

May 2013

537,270 548,924 979,363

Jun 2013

552,747 539,393 1,065,158

Jul 2013

575,549 536,802 1,108,112

Aug 2013

611,113 570,211 1,036,618

Sep 2013

564,013 584,579 1,094,011

Oct 2013

545,642 608,216 1,090,695

Nov 2013

598,797 581,110 1,057,277

Dec 2013

555,867 592,936 1,043,523

Jan 2014

561,083 569,990 1,056,072

Feb 2014

557,795 603,183 1,114,061

Mar 2014

588,290 562,360 1,198,287

Apr 2014

584,348 602,122 1,080,025

May 2014

531,962 605,466 1,181,105

Jun 2014

579,398 610,158 1,123,361

Jul 2014

612,775 638,518 1,190,595

Aug 2014

605,302 614,386 1,151,745

Sep 2014

679,025 672,822 1,213,999

Oct 2014

656,597 685,583 1,204,146

Nov 2014

698,541 658,364 1,217,300

Dec 2014

652,908 670,571 1,145,353

Jan 2015

682,257 641,622 1,248,300

Feb 2015

703,105 705,330 1,165,934

Mar 2015

657,153 726,826 1,191,678

Apr 2015

662,379 649,981 1,243,195

May 2015

683,919 704,750 1,171,702

Jun 2015

695,634 674,766 1,256,794

Jul 2015

741,111 672,581 1,202,325

Aug 2015

731,430 691,217 1,293,546

Sep 2015

690,411 665,784 1,267,458

Oct 2015

678,818 696,557 1,275,999

Nov 2015

781,036 742,500 1,269,694

Dec 2015

773,499 723,515 1,401,683

Jan 2016

659,917 697,513 1,335,301

Feb 2016

744,907 736,721 1,369,392

Mar 2016

748,421 694,130 1,350,055

Apr 2016

790,915 718,902 1,337,506

May 2016

748,150 743,559 1,347,950

Jun 2016

776,617 761,130 1,345,420

Jul 2016

743,490 751,138 1,448,226

Aug 2016

715,038 771,008 1,409,628

Sep 2016

714,856 743,576 1,411,210

Oct 2016

762,842 757,951 1,424,395

Nov 2016

732,341 775,424 1,410,256

Dec 2016

740,962 762,998 1,315,700

Jan 2017

785,238 782,711 1,347,555

Feb 2017

714,025 739,900 1,406,537

Mar 2017

828,569 775,197 1,361,357

Apr 2017

740,748 779,568 1,416,203

May 2017

782,666 809,898 1,434,895

Jun 2017

769,145 789,987 1,416,374

Jul 2017

834,805 768,160 1,413,325

Aug 2017

797,150 786,455 1,375,121

Sep 2017

810,272 825,306 1,380,385

Oct 2017

782,833 787,579 1,474,511

Nov 2017

746,862 790,871 1,487,336

Dec 2017

778,601 806,449 1,619,427

Source: U.S. Bureau of Labor Statistics.