SEMI data February 2012 http://www.semi.org/en/node/41071?id=highlights SEMI charts are at... http://www.screencast.com/users/maugott/folders/SEMI%20equipment%20charts SEMI chart from 2001 content.screencast.com/users/maugott/folders/SEMI%20equipment%20charts/media/ce382243-00f7-42ea-90c2-b683affa4be4/SEMIequipment_btb2.gif SEMI chart from 1995 content.screencast.com/users/maugott/folders/SEMI%20equipment%20charts/media/d952ade0-299e-4342-9e52-551a1c3f943c/SEMIequipment_btb.gif Ratio of SEMI billings to SIA ww chip sales content.screencast.com/users/maugott/folders/SEMI%20equipment%20charts/media/18dbd305-108d-43b3-a88a-3ba6765f20fc/SEMIbillings_chip%20sales_ratio.gif