Field				Description
MOA				Month of admission
YRADM				Year of admission			
COB				Country of birth*
AGECH				Age in character format
AGE				Age in numeric format
CLR				Country of last permanent residence* 
MS				Marital status
STATE				State of intended residence
MSA				Metropolitan area of intended residence
CERT 				Labor certification
OCC				Occupation/labor force status				
SEX				Gender
QUOTA				Country of chargeability
CASE				Type of case
NICOA 				Nonimmigrant class of entry 
NIYOA				Nonimmigrant year of entry
CLS				Immigrant class of admission (2-character)
PRINC				Principal vs. Derivative class of admission


*The countries are listed by abbreviation.  See the .pdf file of INS documentation for full country names. 

FY 1999				
Number of records:  646,560				

FY 2000				
Number of records:  849,386