Year = code
1945 = 1
1946 = 2
1947 = 3
1948 = 4
1949 = 5
1950 = 6
1951 = 7
1952 = 8
1953 = 9
1954 = X
1955 = XI
1956 = XII
1957 = XIII
1958 = XIV
1959 = XV
1960 = XVI
1961 = XVII
1962 = XVIII
1963 = XIX
1964 = XX
1965 = XXI
1966 = XXII
1967 = XXIII
1968 = XXIV
1969 = XXV
1970 = XXVI
1971 = XX7
1972 = XX8
1973 = XX9
1974 = XXX
1975 = AA
1976 = AB
1977 = AC
1978 = AD
1979 = AE
1980 = AF
1981 = AH
1982 = AI
1983 = AL
1984 = AM
1985 = AN
1986 = AP
1987 = AS
1988 = AT
1989 = AU
1990 = AZ
1991 = BA
1992 = BB
1993 = BC
1994 = BD
1995 = BF
1996 = BH
1997 = BI
1998 = BL
1999 = BM
2000 = BN
2001 = BP
2002 = BS
2003 = BT
2004 = BU
2005 = BZ
2006 = CA
2007 = CB
2008 = CC
2009 = CD
2010 = CF
2011 = CH
2012 = CI
2013 = CL
2014 = CM
