1	APRIL 87	2	AUGUST 87	3	JANUARY 89	4	JULY 89
5	JANUARY 90	6	JULY 90	7	SEPTEMBER 91	8	APRIL 92
9	JUNE 93	10	FEBRUARY 94	11	JULY 94	12	NOVEMBER 94
13	FEBRUARY 95	14	APRIL 95	15	AUGUST 95	16	JANUARY 96
17	JULY 96	18	NOVEMBER 96	19	MARCH 97	20	JULY 97
21	DECEMBER 97	22	JANUARY 98	23	APRIL 98	24	SEPTEMBER 98
25	FEBRUARY 99	26	JULY 99	27	NOVEMBER 99	28	MARCH 00
29	JULY 00	30	DECEMBER 00	31	MARCH 01	32	JULY 01
33	DECEMBER 01	44	MARCH 02	45	JULY 02	46	DECEMBER 02
47	APRIL 03	48	AUGUST 03	49	DECEMBER 03	50	APRIL 04
51	AUGUST 04	52	DECEMBER 04	53	APRIL 05	54	AUGUST 05
55	DECEMBER 05	56	APRIL 06	57	AUGUST 06	58	DECEMBER 06
59	DECEMBER 06 (a)	60	APRIL 07	61	AUGUST 07	62	DECEMBER 07
63	APRIL 08	64	AUGUST 08	65	DECEMBER 08	66	APRIL 09
67	AUGUST 09	68	DECEMBER 09	69	APRIL 10	70	AUGUST 10
71	DECEMBER 10	72	APRIL 11	73	AUGUST 11