The BLS does this kind of thing. You can start by looking here: http://www.bls.gov/opub/ooq/2003/spring/art01.pdf http://www.bls.gov/opub/ooq/2003/spring/art01.

The BLS does this kind of thing. You can start by looking here: http://www.bls.gov/opub/ooq/2003/spring/art01.pdf http://www.bls.gov/opub/ooq/2003/spring/art01.pdf These projections are voodoo, but politicians and economic developers take them to the bank.