Chicago DUI lawyer comments on the increase of alcohol consumption

This Chicago DUI lawyer posted here that DUI arrests are down. So I was surprised to find out, from the liquor industry no less, that alcohol consumption is up.

From DISCUS.org:

2009 - Industry Proved Resilient
• Though still hurting, there has been continued growth
– On-premise resurgence lags (restaurant/bars)
– Off-premise spirits sales continue to grow
– Hospitality taxes dangerously counterproductive to recovery
• Volume growth up slightly, revenue flat
– Some trading down occurred
– Market share of volume grew slightly
– Market share of revenue dropped slightly

Anyone else care to explain why alcohol consumption is up, even though it isn't fancy liquor any more, but DUI's are down? Perhaps police officers are worried about going through the trial by fire that Officer Fiorito has or maybe they are worried about the lack of a contract.