Select a year
| 1988 | 1989 | 1990 | ||
| 1991 | 1992 | 1993 | 1994 | 1995 |
| 1996 | 1997 | 1998 | 1999 | 2000 |
| 2001 | 2002 | 2003 | 2004 | 2005 |
| 2006 | 2007 | 2008 | 2009 | 2010 |
Bolivia
Scott 890
Cameroon
Scott 859-60 (1991) and 884-5 (1993)
These stamps were released in 1991 with a value of 15 (red) and 25 (green). They were then re-released in 1993 with values of 100 (red) and 175 (green).
Greenland
Scott 261
Jordan
Scott 1459-60
Scott 1461
Nepal
Scott 521
Peru
Scott 1064
Russia
Scott 6183
United States of America
Scott 2806
2806a-b are strips of 10 and 5 stamps from booklets respectively.
Uruguay
Scott 1518
