Not sure if it's significant, but...
Here are the figures for the "Clinton years", so to speak.
YEAR:
PER MIL WORDS
1993 45.45
1994 39.70
1995 61.24
1996 39.78
1997 20.62
1998 28.82
1999 10.25
2000 25.19
2001 189.32
Here are the figures for this decade up to 2006 - the "Bush years", so to speak.
YEAR:
PER MIL WORDS
2001 189.32 (Repeated from above.)
2002 192.08
2003 142.90
2004 137.58
2005 107.21
2006 113.84