1982-03	1982-04	1982-05	1982-06
1982-07	1982-08	1982-09	1982-10	1982-11	1982-12
1983-01	1983-02	1983-03	1983-04	1983-05	1983-06
1983-07	1983-08	1983-09	1983-10	1983-11	1983-12
1984-01	1984-02	1984-03	1984-04	1984-05	1984-06
1984-07	1984-08	1984-09	1984-10	1984-11	1984-12
1985-01	1985-02	1985-03	1985-04	1985-05	1985-06
1985-07	1985-08	1985-09	1985-10	1985-11	1985-12
	1986-02	1986-03	1986-04	1986-05	1986-06
1986-07	1986-08	1986-11	1986-12	1987-03	1987-12
1988-07	1989-01	1989-04	1989-08	1990-10	1990-12
1992-10	1993-03	1996-02	1997-06	1998-05	2000-03
2000-04	2000-05	2000-12