Table 5. Number of private sector establishments by age Professional, Scientific, and Technical Services Age Class March 1991 March 1992 March 1993 March 1994 March 1995 March 1996 Less than one year _ _ _ 61,904 68,232 71,979 1 year _ _ _ _ 49,864 54,477 2 years _ _ _ _ _ 43,171 3 years _ _ _ _ _ _ 4 years _ _ _ _ _ _ 5 years _ _ _ _ _ _ 6 years _ _ _ _ _ _ 7 years _ _ _ _ _ _ 8 years _ _ _ _ _ _ 9 years _ _ _ _ _ _ 10 years _ _ _ _ _ _ 11 years _ _ _ _ _ _ 12 years _ _ _ _ _ _ 13 years _ _ _ _ _ _ 14 years _ _ _ _ _ _ 15 years _ _ _ _ _ _ 16 years _ _ _ _ _ _ 17 years _ _ _ _ _ _ 18 years _ _ _ _ _ _ 19 years _ _ _ _ _ _ 20 years _ _ _ _ _ _ 21 years _ _ _ _ _ _ 22 years _ _ _ _ _ _ 23 years _ _ _ _ _ _ 24 years _ _ _ _ _ _ 25 years _ _ _ _ _ _ 26 years _ _ _ _ _ _ 27 years _ _ _ _ _ _ 28 years _ _ _ _ _ _ 29 years _ _ _ _ _ _ Born before March 1993 451,751 469,735 489,690 448,349 417,780 389,990 Total 451,751 469,735 489,690 510,253 535,876 559,617 Age Class March 1997 March 1998 March 1999 March 2000 March 2001 March 2002 Less than one year 79,155 83,210 84,925 88,234 92,798 88,906 1 year 57,404 62,433 67,113 66,887 69,184 68,108 2 years 47,371 49,386 54,703 56,665 56,349 56,667 3 years 38,459 41,936 44,142 47,695 49,066 47,936 4 years _ 34,535 38,174 39,231 41,956 42,687 5 years _ _ 31,779 34,274 35,012 37,173 6 years _ _ _ 28,934 30,918 31,489 7 years _ _ _ _ 26,359 28,253 8 years _ _ _ _ _ 24,159 9 years _ _ _ _ _ _ 10 years _ _ _ _ _ _ 11 years _ _ _ _ _ _ 12 years _ _ _ _ _ _ 13 years _ _ _ _ _ _ 14 years _ _ _ _ _ _ 15 years _ _ _ _ _ _ 16 years _ _ _ _ _ _ 17 years _ _ _ _ _ _ 18 years _ _ _ _ _ _ 19 years _ _ _ _ _ _ 20 years _ _ _ _ _ _ 21 years _ _ _ _ _ _ 22 years _ _ _ _ _ _ 23 years _ _ _ _ _ _ 24 years _ _ _ _ _ _ 25 years _ _ _ _ _ _ 26 years _ _ _ _ _ _ 27 years _ _ _ _ _ _ 28 years _ _ _ _ _ _ 29 years _ _ _ _ _ _ Born before March 1993 365,723 343,393 325,091 305,736 288,299 273,015 Total 588,112 614,893 645,927 667,656 689,941 698,393 Age Class March 2003 March 2004 March 2005 March 2006 March 2007 March 2008 Less than one year 83,890 82,449 87,977 97,317 97,483 97,027 1 year 69,746 64,886 65,086 69,725 75,339 75,989 2 years 57,391 56,607 55,862 56,918 59,392 63,908 3 years 49,208 50,114 50,615 49,842 50,181 52,053 4 years 42,353 44,046 44,969 46,169 44,538 44,956 5 years 38,154 38,289 40,159 41,027 42,098 40,518 6 years 33,638 34,732 35,044 37,045 37,350 38,754 7 years 28,699 30,914 32,179 32,608 34,214 34,477 8 years 26,251 26,538 28,778 30,172 29,990 31,739 9 years 22,429 24,587 24,846 27,098 27,969 28,035 10 years _ 21,077 23,116 23,436 25,177 26,266 11 years _ _ 19,912 21,843 21,805 23,843 12 years _ _ _ 18,997 20,534 20,623 13 years _ _ _ _ 17,825 19,402 14 years _ _ _ _ _ 16,962 15 years _ _ _ _ _ _ 16 years _ _ _ _ _ _ 17 years _ _ _ _ _ _ 18 years _ _ _ _ _ _ 19 years _ _ _ _ _ _ 20 years _ _ _ _ _ _ 21 years _ _ _ _ _ _ 22 years _ _ _ _ _ _ 23 years _ _ _ _ _ _ 24 years _ _ _ _ _ _ 25 years _ _ _ _ _ _ 26 years _ _ _ _ _ _ 27 years _ _ _ _ _ _ 28 years _ _ _ _ _ _ 29 years _ _ _ _ _ _ Born before March 1993 260,669 249,303 239,237 230,580 220,338 211,810 Total 712,428 723,542 747,780 782,777 804,233 826,362 Age Class March 2009 March 2010 March 2011 March 2012 March 2013 March 2014 Less than one year 86,720 82,455 89,909 97,829 95,904 89,610 1 year 71,929 64,882 63,465 68,639 75,039 73,862 2 years 62,350 59,137 55,630 53,597 58,257 63,453 3 years 54,347 53,377 52,509 48,431 46,907 51,201 4 years 45,081 47,408 48,257 46,805 43,220 42,012 5 years 39,819 39,959 43,265 43,402 42,159 39,010 6 years 36,056 35,731 36,752 39,433 39,514 38,717 7 years 35,070 32,834 33,028 33,880 36,263 36,410 8 years 31,294 32,092 30,492 30,674 31,486 33,767 9 years 28,971 28,838 29,996 28,350 28,440 29,208 10 years 25,703 26,755 26,949 27,962 26,441 26,605 11 years 24,302 23,818 25,154 25,324 26,229 24,911 12 years 22,016 22,662 22,474 23,544 23,804 24,871 13 years 19,193 20,479 21,399 21,311 22,264 22,501 14 years 18,171 17,887 19,454 20,199 20,170 21,108 15 years 15,990 17,181 17,077 18,405 19,153 19,241 16 years _ 15,060 16,425 16,280 17,454 18,187 17 years _ _ 14,397 15,490 15,576 16,489 18 years _ _ _ 13,733 14,789 14,755 19 years _ _ _ _ 13,133 14,076 20 years _ _ _ _ _ 12,395 21 years _ _ _ _ _ _ 22 years _ _ _ _ _ _ 23 years _ _ _ _ _ _ 24 years _ _ _ _ _ _ 25 years _ _ _ _ _ _ 26 years _ _ _ _ _ _ 27 years _ _ _ _ _ _ 28 years _ _ _ _ _ _ 29 years _ _ _ _ _ _ Born before March 1993 201,832 193,226 186,226 178,490 172,083 165,735 Total 818,844 813,781 832,858 851,778 868,285 878,124 Age Class March 2015 March 2016 March 2017 March 2018 March 2019 March 2020 Less than one year 95,879 99,171 98,124 107,353 116,236 115,101 1 year 74,529 78,196 81,116 83,799 85,377 90,686 2 years 63,303 63,927 68,306 72,619 71,292 71,827 3 years 55,225 55,462 56,370 60,419 63,236 61,595 4 years 45,339 49,033 49,532 50,270 53,681 55,826 5 years 37,888 40,572 43,910 44,392 45,242 48,226 6 years 35,438 34,397 36,840 40,036 40,249 40,952 7 years 35,328 32,449 31,464 33,590 36,397 36,472 8 years 33,503 32,575 29,837 28,903 30,836 33,205 9 years 31,336 31,140 30,145 27,565 26,525 28,354 10 years 27,084 29,210 28,994 27,874 25,505 24,474 11 years 24,802 25,411 27,313 26,922 25,939 23,663 12 years 23,460 23,323 23,809 25,443 25,236 23,974 13 years 23,466 22,125 21,828 22,359 23,807 23,443 14 years 21,222 23,153 20,855 20,742 20,958 22,409 15 years 19,960 20,133 21,645 19,702 19,459 19,713 16 years 18,186 19,181 19,108 20,601 18,484 18,403 17 years 17,299 17,304 18,028 18,018 19,525 17,485 18 years 15,610 16,511 16,335 17,124 17,089 18,646 19 years 14,082 14,812 15,644 15,431 16,163 16,158 20 years 13,318 13,288 14,151 14,831 14,641 15,308 21 years 11,763 12,604 12,770 13,403 14,115 13,853 22 years _ 11,184 11,932 12,023 12,748 13,325 23 years _ _ 10,655 11,395 11,418 12,068 24 years _ _ _ 10,142 10,830 10,863 25 years _ _ _ _ 9,709 10,250 26 years _ _ _ _ _ 9,233 27 years _ _ _ _ _ _ 28 years _ _ _ _ _ _ 29 years _ _ _ _ _ _ Born before March 1993 158,982 152,561 145,819 139,283 133,071 127,274 Total 897,002 917,722 934,530 964,239 987,768 1,002,786 Age Class March 2021 March 2022 March 2023 Less than one year 149,725 194,919 178,666 1 year 95,840 115,423 151,648 2 years 80,574 83,082 98,007 3 years 65,378 71,979 73,549 4 years 56,965 59,432 64,437 5 years 51,943 51,794 53,943 6 years 44,931 47,774 47,256 7 years 38,217 41,390 44,275 8 years 34,196 35,359 38,411 9 years 31,355 31,942 32,736 10 years 26,718 29,087 29,614 11 years 23,161 24,795 27,246 12 years 22,516 21,729 23,231 13 years 22,756 21,069 20,292 14 years 22,204 21,398 19,779 15 years 21,274 20,799 20,259 16 years 18,823 20,046 19,694 17 years 17,717 17,801 18,890 18 years 16,725 16,719 16,772 19 years 17,891 15,840 15,894 20 years 15,549 17,003 14,946 21 years 14,640 14,720 16,360 22 years 13,218 14,019 14,057 23 years 12,806 12,520 13,383 24 years 11,440 12,127 11,812 25 years 10,343 10,962 11,439 26 years 9,787 9,793 10,427 27 years 8,766 9,289 9,194 28 years _ 8,280 8,777 29 years _ _ 7,883 Born before March 1993 122,450 116,806 110,992 Total 1,077,908 1,167,896 1,223,869 NOTE: A '_' indicates that the data are not available and a 'N' indicates that the data do not meet BLS disclosure standards.