TABLE 23 INTERSTATE SWITCHED ACCESS MINUTES (FIGURES SHOWN IN BILLIONS) PREMIUM NON-PREMIUM TOTAL MINUTES MINUTES MINUTES 1984THIRD QUARTER 32.0 5.5 37.5 FOURTH QUARTER 33.6 6.0 39.6 1985FIRST QUARTER 32.9 6.6 39.6 SECOND QUARTER 34.9 6.6 41.5 THIRD QUARTER 36.6 6.2 42.8 FOURTH QUARTER 38.0 5.3 43.3 1986FIRST QUARTER 38.8 4.3 43.0 SECOND QUARTER 41.0 3.8 44.8 THIRD QUARTER 43.2 3.5 46.7 FOURTH QUARTER 45.5 3.0 48.5 1987FIRST QUARTER 48.0 3.2 51.2 SECOND QUARTER 49.3 3.1 52.5 THIRD QUARTER 52.1 2.9 55.0 FOURTH QUARTER 54.4 2.6 57.0 1988FIRST QUARTER 56.6 2.4 59.0 SECOND QUARTER 57.3 2.3 59.6 THIRD QUARTER 59.8 2.3 62.1 FOURTH QUARTER 61.8 2.2 64.0 1989FIRST QUARTER 64.1 2.1 66.2 SECOND QUARTER 66.5 2.0 68.5 THIRD QUARTER 67.7 2.0 69.7 FOURTH QUARTER 70.7 1.9 72.6 1990FIRST QUARTER 72.9 1.9 74.7 SECOND QUARTER 74.0 1.8 75.8 THIRD QUARTER 76.1 1.8 77.9 FOURTH QUARTER 77.4 1.6 79.1 1991FIRST QUARTER 77.7 1.5 79.2 SECOND QUARTER 80.4 1.5 81.9 THIRD QUARTER 81.2 1.4 82.6 FOURTH QUARTER 83.0 1.4 84.4 1992FIRST QUARTER 84.5 1.2 85.6 SECOND QUARTER 85.4 1.1 86.5 THIRD QUARTER 86.8 1.0 87.9 FOURTH QUARTER 88.8 1.0 89.8 1993FIRST QUARTER 89.8 0.9 90.6 SECOND QUARTER 90.4 0.8 91.2 THIRD QUARTER 92.9 0.7 93.6 FOURTH QUARTER 95.2 0.6 95.9 1994FIRST QUARTER 98.1 0.6 98.7 SECOND QUARTER 97.4 0.5 97.9 THIRD QUARTER 101.4 0.5 102.0 FOURTH QUARTER 102.2 0.5 102.7 1995FIRST QUARTER 105.5 0.5 105.9 SECOND QUARTER 106.5 0.4 107.0 THIRD QUARTER 108.6 0.4 109.0 FOURTH QUARTER 110.1 0.4 110.5