Sample stickers began 1977, Political stickers began in 1992
1978
1979
1980
1981
1982
1983
1984
1986
1989
1990
1991 Political & sample screenprinted "91" on "Nothing Could Be Finer" design
1992 Political: more square than rectangle;
no space for plate number; same colors as passenger
2000 4-digit year appears
2001 Political: return to rectangle from square
2002
2005
2006
2007
2008
2010
2011
2012 - political plates change to use regular passenger stickers on most plates.
2013+ - no sample stickers known to have been made