0, No flag for this area
1, Data is available and includes a footnote 
2 (FN), Footnote on this item for this area in place of data
3 (NA), Not available
4 (D), Suppressed to avoid disclosure of confidential information
5 (X), Not applicable
6 (S), Suppressed; does not meet publication standards
9 (F), Fewer than 100 firms
7 (Z), Value greater than zero but less than half unit of measure shown