22 September-1 October 1974. (C74-09-22)

2-14 September 1976. (C76-09-02)

23 July-10 August 1977. (C77-07-23)

25 March-6 April 1980. (C80-03-25)

21-30 April 1981. (C81-04-21)

27 March-8 April 1982. (C82-03-27)

6-18 April 1983. (C83-04-06)

8-20 April 1984. (C84-04-08)

10-22 April 1985. (C85-04-10)

16-25 July 1987. (C87-07-16)

16-25 July 1989. (C89-07-16)

8-17 September 1993. (C93-09-08)

15-23 September 1994. (C94-09-15.1)

19-27 September 1995. (C95-09-19.2)

16-24 September 1996. (C96-09-16.5)

16-24 September 1997. (C97-09-16)

17-25 September 1998. (C98-09-17)

17-25 September 1999. (C99-09-17)

16-24 September 2000. (C00-09-16)

18-26 September 2001. (C01-09-18)

16-24 September 2002. (C02-09-16)

16-24 September 2003. (C03-09-16)

16-24 September 2004. (C04-09-16)

16-24 September 2005. (C05-09-16)

16-24 September 2006. (C06-09-16)