Well, those were off the top of my head from calculations I did earlier today: NSA apr 2008-apr 2012, net change in NILF and the age groups. I used the one scree database at Current Population Survey (CPS)About 30% of that increase is over 65s. About 20% are 16-24s and a good chunk is married women. Hard to break things down exactly.
You're peak categories of over 65 and 16-24 is consistent with my peaks at 20 to 24 and 65 to 69.
The BLS ftp site has the entire data set available in one big flat file. Category descriptors are indexed separately.
How did you calculate your numbers? 30% from when to when? A 30% increase in the NILF?