| Year | Customers Served (As of 12/31) |
Sales (GWH) |
Revenues (1000$) |
Average Price (Cents/KWH) |
| 1960 | 104,683 | 1,832 | 50,539 | 2.76 |
| 1961 | 104,918 | 2,314 | 55,713 | 2.41 |
| 1962 | 102,187 | 2,482 | 60,370 | 2.43 |
| 1963 | 108,128 | 2,774 | 65,424 | 2.36 |
| 1964 | 110,298 | 2,987 | 68,557 | 2.30 |
| 1965 | 112,249 | 3,217 | 70,748 | 2.20 |
| 1966 | 116,140 | 3,615 | 77,429 | 2.14 |
| 1967 | 119,781 | 4,092 | 85,761 | 2.10 |
| 1968 | 122,584 | 4,607 | 93,770 | 2.04 |
| 1969 | 125,554 | 5,012 | 101,085 | 2.02 |
| 1970 | 126,800 | 5,443 | 108,062 | 1.99 |
| 1971 | 128,999 | 5,774 | 114,898 | 1.99 |
| 1972 | 132,335 | 6,353 | 128,316 | 2.02 |
| 1973 | 132,106 | 6,771 | 144,601 | 2.14 |
| 1974 | 134,362 | 6,845 | 163,575 | 2.39 |
| 1975 | 140,585 | 7,619 | 187,555 | 2.46 |
| 1976 | 147,042 | 8,129 | 223,721 | 2.75 |
| 1977 | 152,662 | 8,907 | 261,054 | 2.93 |
| 1978 | 156,037 | 9,499 | 292,515 | 3.08 |
| 1979 | 160,017 | 9,587 | 333,713 | 3.48 |
| 1980 | 167,104 | 10,871 | 469,774 | 4.32 |
| 1981 | 166,927 | 10,861 | 553,006 | 5.09 |
| 1982 | 169,663 | 10,842 | 574,962 | 5.30 |
| 1983 | 178,073 | 10,813 | 595,808 | 5.51 |
| 1984 | 188,006 | 11,456 | 761,906 | 6.65 |
| 1985 | 187,119 | 11,946 | 876,116 | 7.33 |
| 1986 | 186,278 | 12,105 | 817,201 | 6.75 |
| 1987 | 184,740 | 11,893 | 804,901 | 6.77 |
| 1988 | 185,531 | 12,507 | 853,661 | 6.83 |
| 1989 | 185,111 | 12,560 | 886,510 | 7.06 |
| 1990 | 188,017 | 13,014 | 928,472 | 7.13 |
| 1991 | 187,423 | 13,041 | 920,491 | 7.06 |
| 1992 | 189,159 | 12,917 | 938,897 | 7.27 |
| 1993 | 190,863 | 13,424 | 1,005,545 | 7.49 |
| 1994 | N/A | 14,915 | 1,083,000 | 7.26 |