Album Number	Year
1	1967
2	1969
3	1970
4	1971
5	1972
6	1973
7	1973
8	1974
9	1975
10	1976
11	1977
12	1977
13	1979
14	1980
15	1983
16	1984
17	1987
18	1989
19	1991
20	1993
21	1993
22	1995
23	1997
24	1999
25	2002
26	2003
27	2013
28	2016