TABLE 22 LINE USAGE PER DAY DIAL EQUIPMENT MINUTES PER LOCAL LOOP LOCAL INTRASTATE INTERSTATE TOTAL TOLL TOLL 1980 39 4 4 46 1981 39 4 4 46 1982 39 4 4 47 1983 39 4 4 48 1984 40 5 5 50 1985 40 5 6 51 1986 39 5 6 51 1987 38 6 7 50 1988 39 6 7 51 1989 38 6 7 51 1990 37 6 7 51 1991 37 6 7 50 1992 37 6 7 51 1993 38 6 7 51 1994 38 6 8 52 INCREASE OVER PRIOR YEAR 1981 -1 % 4 % 5 % 0 % 1982 1 3 5 2 1983 0 2 7 1 1984 1 17 21 4 1985 -1 9 17 2 1986 0 5 6 1 1987 -3 3 5 -1 1988 1 2 5 2 1989 -1 3 4 0 1990 -2 1 0 -1 1991 -2 -1 1 -1 1992 1 1 2 1 1993 2 -1 1 2 1994 1 -1 2 1