| 1. September 9, 1969 |
| 2. August 3-4, 1970 |
| 3. April 11-12, 1972 |
| 4. September 18-19, 1972 |
| 5. July 24-25, 1973 |
| 6. July 26, 1973 |
| 7. October 15-16, 1974 |
| 8. April 16, 1975 |
| 9. October 21, 1975 |
| 10. April 5, 1976 |
| 11. October 28-29, 1976 |
| 12. March 14, 1977 |
| 13. April 13-14, 1978 |
| 14. May, 3,5,8,10,12,15,1978 |
| 15. June 6-8, 1979 |
| 16. October 18, 19, 25, 26, Nov 6, 1979 |
| 17. April 20, May 1, 1980 |
| 18. May 21, 1980 |
| 19. March 25, 1981 |
| 20. June 28-29, 1982 |
| 21. July 11, August 11, 1982 |
| 22. October 26-28, 1982 |
| 23. May 2-4, 1983 |
| 24. September 21-22, 1983 |
| 25. June 25-27, 1984 |
| 26. August 15-16, 1984 |
| 27. July 8-9, 1985 |
| 28. November 18-20, 1985 |
| 29. August 6-8, 1986 |
| 30. June 4-5, 1987 |
| 31. August 26-28, 1987 |
| 32. April 26-27, 1988 |
|
| 33. September 26-27, 1988 |
| 34. May 30- June 1, 1989 |
| 35. July 10-12, 1989 |
| 36. September 12-13, 1990 |
| 37. September 9-10, 1991 |
| 38. June 30- July 1, 1992 |
| 39. July 29-31, 1992 |
| 40. August 31- September 2, 1992 |
| 41. January 14-15, 1993 |
| 42. May 4-7, 1993 |
| 43. May 31- June 3, 1994 |
| 44. July 25-26, 1994 |
| 45. April 24- May 5, 1995 |
| 46. November 18-27, 1996 |
| 47. February 4-20, 1998 |
| 48. October 19-23, 1998 |
| 49. November 15-23, 1999 |
| 50. October 10 - 26, 2000 |
| 51. December 11-14, 2001 |
| 52. September 4-13, 2002 |
| 53. May 11-20, 2004 |
| 54. May 9-18, 2006 |
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