27-31 March 1990. (C90-03-27)

25-30 March 1991. (C91-03-25)

13-18 December 1992. (C92-12-13)

19-24 May 1994. (C94-05-19)

22-25 March 1995. (C95-03-22.2)

22-27 March 1998. (C98-03-22)

10-16 December 1999. (C99-12-10)

10-15 April 2001. (C01-04-10)

3-8 January 2003. (C03-01-03)

16-22 August 2004. (C04-08-16.2)

30 May-4 June 2005. (C05-05-30)

10-15 September 2006. (C06-09-10.3)

2-7 July 2007. (C07-07-02)

1-6 June 2008. (C08-06-01)

6-10 July 2009. (C09-07-06)

19-23 July 2010. (C10-07-19.4)

3-8 July 2011. (C11-07-03.1)

3-8 June 2012. (C12-06-03.1)

20-26 November 2013. (C13-11-20)

22-27 June 2014. (C14-06-22)

29 June-3 July 2015. (C15-06-29.4)

10-16 July 2016. (C16-07-10)

19-23 June 2017. (C17-06-19.2)

4-8 June 2018. (C18-06-04.2)

1-5 July 2019. (C19-07-01.1)