Number of workdays of idleness due to major work stoppages, 1990-99 (thousands) Thousands of days idle 1990 5,926 1991 4,584 1992 3,989 1993 3,981 1994 5,020 1995 5,771 1996 4,889 1997 4,497 1998 5,116 1999 1,996