Annual percent change in multifactor productivity in manufacturing, 1991-2001 Percent change 1991 -1.0 1992 1.8 1993 1.1 1994 2.3 1995 2.0 1996 0.8 1997 3.1 1998 2.6 1999 2.8 2000 2.3 2001 -0.8