footnote_code	footnote_text
1	Data Not Continuous	
2	Non-Economic Events	
3	Industry Coding Redefinition	
4	Area Redefinition	
C	Continuity Break	
F	Footnote Exists	
N	NAICS 2002 replaces SIC beginning March 2003. See http://www.bls.gov/sae/saenaics.htm for details.	
P	Preliminary