SEMI data June 2011 http://www.semi.org/en/node/38276 SEMI charts http://www.screencast.com/users/maugott/folders/SEMI%20equipment%20charts SEMI chart from 2001 content.screencast.com/users/maugott/folders/SEMI%20equipment%20charts/media/b41f2ef0-f519-483a-860d-804a2445a5dd/SEMIequipment_btb2.gif SEMI chart from 1995 content.screencast.com/users/maugott/folders/SEMI%20equipment%20charts/media/e7986e98-1c82-47a2-8511-02d0cc89e534/SEMIequipment_btb.gif Ratio of SEMI billings to SIA ww chip sales content.screencast.com/users/maugott/folders/SEMI%20equipment%20charts/media/65cc6150-cb3a-47f9-b904-a5987cffafa6/SEMIbillings_chip%20sales_ratio.gif