Occupational unit - PCS
0 = 0. Farmers
10 = 10. Paid farm workers
21 = 21. Industrial workers
22 = 22. Artisans
23 = 23. Fishers
26 = 26. Wholesale merchants
27 = 27. Smaller merchants
30 = 30. Free-market professions
32 = 32. Professors, literary and scientific professions
33 = 33. Engineers
34 = 34. Administrative executives
41 = 41. Instructors, diverse intellectual professions
42 = 42. Medical and social services
43 = 43. Technicians
44 = 44. Administrative secretaries
51 = 51. Office employees
53 = 53. Business employees
60 = 60. Supervisors
61 = 61. Skilled workers
63 = 63. Specialized workers
65 = 65. Miners
66 = 66. Mariners and fishers
67 = 67. Apprenticed workers
68 = 68. Laborers
70 = 70. Servants
71 = 71. Housewives
72 = 72. Other service personnel
80 = 80. Artists
81 = 81. Clergy
82 = 82. Army and police
91 = 91. Students
92 = 92. Soldiers of the contingent
93 = 93. Former farmers (farms and workers)
94 = 94. Retired from business
95 = 95. Retired from the public sector
96 = 96. Former workers of the private sector
99 = 99. Other nonactive people (includes persons age 14 or less)