| Symbol | Date | Installment |
3 July 1998 | First Instalment | |
19 March 1999 | Second Instalment | |
9 December 1999 | Third Instalment | |
22 March 2000 | Fourth Instalment | |
29 September 2000 | Fifth Instalment | |
15 March 2001 | Sixth Instalment | |
22 June 2001 | Seventh Instalment | |
28 September 2001 | Eighth Instalment | |
14 December 2001 | Ninth Instalment | |
20 June 2002 | Tenth Instalment | |
3 October 2002 | Eleventh Instalment | |
13 March 2003 | Twelfth Instalment | |
26 June 2003 | Thirteenth Instalment | |
18 September 2003 | Fourteenth Instalment | |
18 December 2003 | Fifteenth Instalment |