year month rate call mail volume 1992 11 5.87 931 4522 106650.8 1992 12 6.1 606 2614 91089.6 1993 1 6.17 332 1160 66363.6 1993 2 6.52 766 1626 144360.4 1993 3 6.99 670 1409 76434.9 1993 4 6.94 767 4612 86032.6 1993 5 6.7 707 3636 95308.4 1993 6 6.75 683 2945 100874.0 1993 7 7.37 605 2952 100826.8 1993 8 8.02 387 1502 90799.9 1993 9 7.24 542 1796 102482.6 1993 10 7.66 437 4453 81090.2 1993 11 6.92 614 3044 108813.6 1993 12 6.6 597 3704 79515.5 1994 1 6.63 801 1421 118591.2 1994 2 6.92 805 3576 155930.2 1994 3 7.24 846 2037 114764.4 1994 4 7.51 876 2766 107752.3 1994 5 7.94 356 4064 93873.8 1994 6 8.35 225 1382 69572.7 1994 7 8.23 378 3575 90620.8 1994 8 8.36 227 4837 93301.5 1994 9 8.78 457 4860 110208.5 1994 10 9.25 596 4579 116815.9 1994 11 9.2 630 3293 120235.3 1994 12 9.51 0 3829 88549.9 1995 1 10.09 0 4030 91179.2 1995 2 9.94 0 1525 143765.5 1995 3 9.59 0 2353 89616.8 1995 4 9.2 848 4923 137440.5 1995 5 8.76 884 3777 139191.2 1995 6 8.64 522 1663 124313.5 1995 7 8.78 533 4576 127095.9 1995 8 8.6 287 4971 131723.4 1995 9 8.39 851 3245 116889.7 1995 10 8.32 604 4382 132792.2 1995 11 8.16 476 2220 137976.5 1995 12 8.22 937 4384 131292.3 1996 1 8.35 418 4854 114876.1 1996 2 8.42 806 3326 180894.6 1996 3 8.35 263 4151 112812.7 1996 4 8.23 903 1369 163731.6 1996 5 8.1 634 2510 141467.7 1996 6 7.97 929 3997 135076.2 1996 7 8.06 910 2297 150287.8 1996 8 8.06 211 1893 120694.6 1996 9 8.03 205 2100 93125.8 1996 10 7.82 336 1834 132174.5 1996 11 7.17 266 4669 114890.1 1996 12 6.52 516 1309 124861.4 1997 1 6.45 241 1176 113737.5 1997 2 6.06 544 2526 174417.7 1997 3 5.91 355 1458 95490.6 1997 4 6.07 206 3998 106215.0 1997 5 5.98 210 3826 98223.4 1997 6 5.65 759 4464 147073.2 1997 7 5.47 670 1315 131774.6 1997 8 5.33 729 4207 151458.4 1997 9 4.94 951 3148 136792.4 1997 10 4.47 489 1190 120353.2 1997 11 4.05 430 2140 108850.2 1997 12 4.07 877 3748 142384.9 1998 1 4.25 625 3138 142380.6 1998 2 4 356 3288 173577.4 1998 3 3.82 386 4700 126972.6 1998 4 3.86 659 4427 124831.0