A
- 1963 to early 1966: A+6-digits
- 1966 to early 1976: A+7-digits
- 1976 to 1983: A8-digits
- 1984 onwards: AN8-digits
E,F,N,R,S
- 1982: E/F/N/R/S+6-digits
- 1983 onwards: E/F/N/R/S8-digits
I,J,K
- 1984: I/J/K8-digits
- 1985 to 1997: I/J/K9-digits
- 1998 onwards: I/J/K10-digits
L,M,G,Z,U,W
- 1998 onwards: L/M/G/Z/U/W10-digits
X
- 1999 onwards: X+11-digits
D
- 2000 onwards: D+11-digits
Y,7
- 2001 onwards: Y/7+11-digits
6,8
- 2002 onwards: 6/8+11-digits
5
- 2003 onwards: 5+11-digits
4
- 2004 onwards: 4+11-digits
3
- 2005 onwards: 3+11-digits
2
- 2006 onwards: 2+11-digits
1
- 2007 onwards: 1+11-digits
0
- 2008 onwards: 0+11-digits
9
- 2009 onwards: 9+11-digits
TZ
- 2010: TZ+10-digits
TE
- 2011: TE+10-digits
TX
- 2012: TX+10-digits
TN
- 2013: TN+10-digits
TM
- 2014: TM+10-digits
TA
- 2015: TA+10-digits
TC
- 2016: TC+10-digits
TD
- 2017: TD+10-digits
TE
- 2018: TE+10-digits
TF
- 2019: TF+10-digits
TG
- 2020: TG+10-digits
TH
- 2021: TH+10-digits
TI
- 2022: TI+10-digits