In USA, the intact rate is increasing gradually. Stated differently the cut rate is decreasing gradually. A commonly quoted survey is the National Hospital Discharge Survey which shows a cut rate of ~63% in 1994 declining to ~57% in 2004. It went up and down during those years but a downward cutting trend is decipherable.
Prior to 1994, I'm not aware of any national survey of infants. Prior stats are based upon surveying adults and asking them when they were cut and then extrapolating.
It's generally dropping faster [fewer circ's] in the West but has been rather static in the Midwest.
More info:
U.S. Circumcision Statistics -- scroll down to "recent statistical data".