1976 A* - possibly (VA) 1977 B - possibly (VB) 1978 C* - possibly (VC) 1979 D - possibly (VD) 1980 E - possibly (VE) 1981 F - possibly (VF) 1982 G 1983 H* 1984 I* 1985 J* 1986 K* 1987 L* 1988 M* 1989 N* 1990 O 1991 P 1992 Q* 1993 R 1994 S 1995 T or W 1996 V or U 1997 Z or U 1998 Z or W 1999 X 2000 AB 2001 DE 2002 DT 2003 AD 2004 CL 2005 MA 2006 OP 2007 EO 2008 PJ 2009 LT 2010 RS