| BURN YEAR | DATE | BURN YEAR | DATE |
| 1972 | 04/22 | 1986 | 05/01 |
| 1973 | 05/08* | 1987 | 04/08 |
| 1974 | 04/30 | 1988 | 04/20 |
| 1975 | 05/03 | 1989 | 04/11 |
| 1976 | 04/27 | 1990 | 04/03 |
| 1977 | 04/23 | 1991 | 04/24 |
| 1978 | 04/28 | 1992 | 04/13 |
| 1979 | 04/26 | 1993 | 04/24 |
| 1980 | 04/30 | 1994 | 03/31 |
| 1981 | 04/25 | 1995 | 04/06 |
| 1982 | 04/22 | 1996 | 04/16 |
| 1983 | 04/20 | 1997 | 04/28 |
| 1984 | 04/28 | 1998 | 05/04 |
| 1985 | 04/16 | 1999 | 04/12 |
| 2000 | 04/12 |