TABLE 21 DIAL EQUIPMENT MINUTES (IN BILLIONS) LOCAL INTRASTATE INTERSTATE TOTAL TOLL TOLL 1980 1,458 141 133 1,733 1981 1,492 151 144 1,787 1982 1,540 158 154 1,853 1983 1,587 166 169 1,923 1984 1,639 198 208 2,045 1985 1,673 222 250 2,145 1986 1,699 237 270 2,207 1987 1,713 253 295 2,261 1988 1,795 269 321 2,384 1989 1,829 286 344 2,459 1990 1,854 300 355 2,510 1991 1,868 304 368 2,540 1992 1,950 318 387 2,654 1993 2,052 323 402 2,777 1994 2,142 331 424 2,898 INCREASE OVER PRIOR YEAR 1981 2 % 7 % 8 % 3 % 1982 3 5 7 4 1983 3 5 10 4 1984 3 19 23 6 1985 2 12 20 5 1986 2 7 8 3 1987 1 7 9 2 1988 5 6 9 5 1989 2 6 7 3 1990 1 5 3 2 1991 1 1 4 1 1992 4 5 5 4 1993 5 2 4 5 1994 4 2 5 4 PERCENT DISTRIBUTION 1980 84 % 8 % 8 % 100 % 1981 83 8 8 100 1982 83 9 8 100 1983 83 9 9 100 1984 80 10 10 100 1985 78 10 12 100 1986 77 11 12 100 1987 76 11 13 100 1988 75 11 13 100 1989 74 12 14 100 1990 74 12 14 100 1991 74 12 14 100 1992 73 12 15 100 1993 74 12 14 100 1994 74 11 15 100