1963-1968 (7) 6 stamps •	1968-1973 (full 1972) (18) 119 stamps (total 125) •	1972-1982 (full 1977) (18) 101 stamps (total 226) •	1977-1987 (18) 91 stamps (total 317) •
1988-1998 (full 1997) (10) 51 stamps (total 368) •	1997-2007 (full 2006) (18) 52 stamps (total 420) •	2006-2011 (11) 36 stamps (total 456) •	2011-2016 (10) 24 stamps (total 480) •
2016-2021 (11) 12 stamps (total 492) •	2021-2026 (7) 3 stamps (total 495) •