| Year | Ballpark | Attendance | PFr | PFhr |
| 1961 | | 2,593,655 | | |
| 1962 | Dead River Aroostookdome | 3,201,825 | 0.97 | 0.97 |
| 1963 | Dead River Aroostookdome | 3,206,994 | 0.98 | 0.96 |
| 1964 | Dead River Aroostookdome | 3,217,273 | 1.05 | 1.10 |
| 1965 | Dead River Aroostookdome | 3,219,803 | 0.99 | 0.92 |
| 1966 | Dead River Aroostookdome | 3,196,969 | 1.05 | 1.00 |
| 1967 | Dead River Aroostookdome | 3,222,270 | 1.01 | 1.05 |
| 1968 | Dead River Aroostookdome | 3,210,343 | 0.98 | 0.92 |
| 1969 | Dead River Aroostookdome | 3,221,880 | 1.06 | 1.00 |
| 1970 | Dead River Aroostookdome | 3,221,751 | 1.05 | 0.99 |
| 1971 | Dead River Aroostookdome | 3,219,694 | 1.02 | 1.03 |
| 1972 | Dead River Aroostookdome | 3,009,538 | 0.99 | 0.92 |
| 1973 | Dead River Aroostookdome | 3,047,459 | 1.05 | 0.90 |
| 1974 | Dead River Aroostookdome | 3,188,875 | 0.99 | 0.95 |
| 1975 | Dead River Aroostookdome | 3,166,973 | 1.00 | 0.96 |
| 1976 | Dead River Aroostookdome | 3,210,820 | 1.02 | 0.93 |
| 1977 | Dead River Aroostookdome | 3,194,797 | 1.00 | 0.87 |
| 1978 | Dead River Aroostookdome | 3,151,068 | 1.01 | 0.90 |
| 1979 | Dead River Aroostookdome | 2,653,917 | 0.98 | 0.91 |
| 1980 | Dead River Aroostookdome | 2,600,166 | 0.97 | 0.94 |
| 1981 | Dead River Aroostookdome | 2,440,626 | 0.99 | 0.90 |
| 1982 | Dead River Aroostookdome | 2,367,078 | 1.01 | 0.97 |
| 1983 | Dead River Aroostookdome | 3,044,238 | 0.98 | 0.87 |
| 1984 | Dead River Aroostookdome | 2,814,730 | 0.95 | 0.88 |
| 1985 | Dead River Aroostookdome | 3,004,150 | 0.96 | 0.88 |
| 1986 | | 2,394,015 | | |
| 1987 | Dead River Aroostookdome | 2,733,627 | 1.00 | 0.88 |
| 1988 | Dead River Aroostookdome | 2,326,339 | 0.98 | 0.92 |
| 1989 | Dead River Aroostookdome | 2,745,048 | 0.98 | 0.96 |
| 1990 | Dead River Aroostookdome | 2,970,434 | 1.02 | 0.94 |
| 1991 | Dead River Aroostookdome | 3,026,285 | 0.98 | 0.89 |
| 1992 | Dead River Aroostookdome | 3,214,252 | 0.98 | 0.86 |
| 1993 | Dead River Aroostookdome | 3,212,881 | 1.01 | 0.89 |
| 1994 | Dead River Aroostookdome | 3,211,594 | 0.96 | 0.84 |
| 1995 | Dead River Aroostookdome | 3,170,112 | 1.02 | 0.90 |
| 1996 | Dead River Aroostookdome | 3,116,805 | 0.96 | 0.87 |
| 1997 | Dead River Aroostookdome | 3,216,648 | 0.94 | 0.84 |
| 1998 | Dead River Aroostookdome | 3,209,992 | 0.98 | 0.88 |
| 1999 | Dead River Aroostookdome | 3,213,963 | 0.97 | 0.92 |
| 2000 | Dead River Aroostookdome | 3,186,919 | 1.02 | 0.93 |
| | 1.00 | 0.93 |
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